I understand it may seem unprofessional and indecisive to decide to leave a job very shortly after starting, but the situation is relatively messy and was through no action of my own.
I've been contently working at the same company on the same team for a few years, and was even recently told I'd be considered for promotion. Higher powers then decided to reallocate resources to different areas, and moved me to a new team with barely any notice. Not only was my career progress essentially reset, the new work has taken me in the opposite direction I was aiming to take my career. I honestly feel miserable and unsure how long I can endure trying to learn about a new area I'm wholly uninterested in, while appeasing my new relatively demanding management.
I'm now actively sending out applications and seeking interviews elsewhere, but don't know the best way to approach the situation with my new manager and recruiters, if I even should. I've only talked to one recruiter so far, but simply neglected to mention this latest career development, since I was looking for a change from my old role anyways and could justify that exit as well, and I'm trying to avoid coming across negatively and it's hard for me to speak positively about my new role, apart from maybe being an opportunity for new growth (that I don't actually want). Even in my job, to this point, I've tried to outwardly match the enthusiasm of my fellow new team members, but have fallen behind due to taking previously scheduled vacation, as well as a lack of motivation, and am definitely struggling to keep up with expectations.
I know my mental health can't be sustained in this role much longer, and am considering approaching my management with that fact and that I'm planning on leaving. I don't know what I hope to accomplish by doing so, as it's probably impossible to be put back on my old team since the directive came from significantly above either my old or new manager, but I'd really rather be laid off or even fired than keep working at this job, since I'm hesitant to quit and be without income for some indeterminate period.
Should I just keep my head down and work at my new job and accumulate stress from poor performance until I'm likely let go, and avoid the new job in discussions with recruiters, or be more honest with all parties, which I'm leaning more towards on principle? I'd really appreciate anyone's experience or observations I might learn from, thanks so much!