Advisor ignoring his Ph.D. student after getting tenure I am Ph.D. candidate, and my advisor got his tenure about 9 months ago and called me on zoom and said no one could fire him anymore, and that was the last time we talked. Since then, he has completely ignored me as his only Ph.D. student. He does not read or comment on my papers(2 paper drafts were sent five months ago). My results get continuously beaten, and I have to make changes to keep my papers state-of-the-art constantly. He refuses to set up a zoom meeting since no one is going to school; that is the only way to meet him. He was active with fundings, papers, and proposals before he got tenure.  He responds to my emails with irrelevant suggestions, or he says he will read my papers sometime next week(he expects 2-3 papers to graduate me). He is not supporting me financially anymore since his fundings are over, and I pay for my Ph.D. from pocket.  School officials can not do anything, and changing my advisor after four years of hard work will result in a complete reboot. I'm an international student and can not just quit. My goal is to get my OPT and a job. It looks impossible to graduate with this advisor... What would be the best option to do in this situation.
I'm really sorry to hear about this situation.

School officials can not do anything, and changing my advisor after four years of hard work will result in a complete reboot.

This surprises me. Every university differs, but in general you should bring these sorts of issues to your Associate Chair/Director, etc. of Graduate Studies in your department. If they aren't able to mediate with you and your supervisor, or aren't willing to, in most universities that I'm familiar with you should escalate your complaint. Perhaps you have an Associate Dean of Graduate Studies, or if there is a Faculty of Graduate Studies, there is somebody that you can consult there.
Barring this, you should seek advice from either your graduate students association. There may be informal avenues of support that you can pursue.
Most universities have policies around the change of supervisor, as this happens more commonly than you may think.