Sometimes people enter a new workplace (department, team) with the expectation that relationships with colleagues should and will be wonderful. The reason these expectations are often not met is that they are unrealistic.
From my understanding of the nature of professional workplace culture, the appropriate expectation is that relationships with coworkers should be neutral at best. If they are too friendly, this can backfire. (What if you become your friend-colleague's boss and they start under-performing, or the other way around?) Also people change over time, and a fantastic relationship cannot by definition be sustained forever - changes in personal circumstances, life phases, health, etc. can and do affect how people treat each other.
When we interact with others we often expect common courtesy. In a civilized society this should be the case. But everyone comes from different backgrounds. And not everyone had the same number of hours of sleep the night (or month) before. Also, if the issue is the culture of the company, this may simply mean that people have over time developed certain patterns of behavior that are sustainable in these particular professional circumstances. There may be reasons for this that only become apparent after you have been with the company for some time (could be years).
I would also second @New-To-IT and recommend to refocus from how you are being treated to just doing your work. If your colleagues' attitudes are only impacting your social relationships in the office but not directly your work performance, getting traction with the management might be difficult and you might be perceived as the troublemaker in the group (i.e., why doesn't everyone else have problems with each other?).
Considering the current situation, the optimal approach may be to adjust expectations, or even eliminate them. Did someone smile as they almost bumped into you in the hallway? Did you hold the door or the elevator and the person thank you for that? Did you make an on-point remark in the meeting that helped the group? Did you manage to wish someone a nice weekend or a happy birthday? That's one or 3 or 10 more accomplishments than you expected that day. Repeat the next day.
You get to work and focus on your immediate tasks at hand. Your goal is to get better at your work and to keep management content with your performance. If that happens, over time you might become viewed as a subject matter expert in your particular project area(s), and a go-to person with some questions. This will automatically enhance your reputation. Also the staff typically take some cues from the management, and if you can prove yourself to the higher-ups, that respect is more likely to trickle down to peers.
For what it's worth, I will share a personal experience.
I once had a situation where a colleague on a team I just joined, for reasons I never entirely figured out, suddenly became distant and cold toward me specifically. Any time I would approach to say Hi or even say a word in a meeting, I could feel her tightening, as if she barely tolerated my presence. We did not collaborate on any projects work-wise at the time, so I doubt it was due to my performance. I spent quite a bit of time agonizing (at first), then calmly reflecting and contemplating the situation. I decided that my indignation and feelings of being unjustly shunned could not benefit me, but would only increase the risk of escalating the situation. Instead, I did something that was quite difficult, because this involved suppressing my ego: I let it go. I stopped any attempts to 'remedy' the situation, instead refocusing fully on my own tasks at hand. I did not discuss my feelings or seek support from colleagues, and I did my best to overcome and reverse (yes, indeed) my own private negative feelings toward that colleague.
Each morning, I mentally wished her a great day and all the best. I did this no matter what, as a daily routine (like brushing teeth). I also stopped expecting any ROI on my positive thoughts, or any change in her behavior as a result -- I detached from any results of my actions. I simply did these things for their own sake.
The result was that within about 3-4 months her attitude reversed just as suddenly and inexplicably, with coldness and avoidance giving way to acknowledgement of my existence and even proactive contact and comments in positive tone. We have now been working together for some time and have what you would call a decent, normal working relationship. I later found out that she had gotten ill during the time when her negativity toward me began to manifest. It is possible that something about me had become a trigger and a target for her health-related frustration, and without being able to control it she began to channel and project her unhappiness outward, me becoming a de facto target. I now know that nothing I could have done proactively at the time would have remedied this situation. Sometimes we have to leave people to work through their own issues in their minds. Time may be only instrument of healing and resolution.
The thing is, when someone YEARNS for inclusion, validation and approval, this often prompts an opposite reaction -- good intentions may be mistaken for insecurity, setting off a chain reaction motivated by beating down and eliminating the weak link in the group (akin to bullying in school). Rid yourself of the impression of wanting/needing these things, and you are on the way to getting them. It seems counter-intuitive but we often get things when we let go of our desire for them. Sometimes the long-sought reward comes only after (and because) we give up and re-center our needs and priorities. Good luck!
