I would suggest putting out “feelers” to see what other opportunities are out there. Home care companies are starting up more frequently now.
I wonder if there’s anyone that you can report your experience to…if so, start keeping written, dated notes each time you feel your manager has “crossed the line”, made your workplace uncomfortable. They might be trying to “age you out” which is discriminatory and I believe, illegal. Are you a member of AARP? They offer help.
I am sad that you are having to experience this. It’s not fair.