Why did my warehouse job suddenly turn so toxic after years there?

I quit. I had few years at the job long time. 2 years ago I was one of the favorites , always a good worker.
this year now it became toxic.

Most of the usual longeterm workers I once knew got fired, quit, got new job, changed to other schedules , and is now mostly just new hires like season 8 lol.

the mean kids that gossip got promoted to supervisors or leads and trainers.

I got denied be a trainer& I think due to jealousy they wanted me gone.
a mean girl that hates me for no reason got promoted with her mean girl best friend. I never treated them bad & no reason they love gossiping watching me.

everyone smirks at any single thing I do, if I drop something, if I do a tiny miscan misstep of my feet.
I’m one of the prettiest girls at the job skinny, and Boys always showed interest in me which is another reason y I got disliked.
my good work became unnoticed to them.
I began cry daily after work as girls & workers would give me mean looks all day or mock me as I walked elegant.
I got denied few months ago change to part time & dayshift as I wanted start school. So I was stuck many years graveyard schedule.
I kinda do already have a new job as a server at a rich city at a rich senior living hotel like place but I need do drug test&finish onboarding not start yet&still waiting for 2 other job interviews confirm if I got hired or not this wk as those pay $5 higher& give u free meal daily.

Why did my warehouse job suddenly turn so toxic after years there?
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