Hello DoroMona: I see this is your first post here on PC. So... welcome to PsychCentral!

I hope you find the time you spend here to be of benefit.
I don't know as I have any particularly great suggestions for you.

However here are links to a bunch of articles, from PsychCentral's archives, on the subjects of dealing with toxic people & establishing personal boundaries that may be of some interest:
https://psychcentral.com/blog/whats-...deal-with-one/
https://psychcentral.com/blog/toxic-...-to-walk-away/
https://psychcentral.com/blog/3-simp...ships-at-work/
https://psychcentral.com/lib/11-thin...-toxic-people/
https://blogs.psychcentral.com/careg...-toxic-people/
https://blogs.psychcentral.com/careg...-toxic-people/
https://blogs.psychcentral.com/lever...-toxic-people/
https://psychcentral.com/lib/what-ar...do-i-get-some/
https://psychcentral.com/lib/the-imp...al-boundaries/
https://psychcentral.com/lib/10-way-...er-boundaries/
https://psychcentral.com/blog/7-tips...aries-at-work/
https://psychcentral.com/blog/5-ways...ficult-people/
https://psychcentral.com/blog/4-step...al-boundaries/
I don't know, of course, if you're here simply seeking advice with regard to this particular concern or if you plan to continue posting.

However, should you be planning to continue on (we hope you do)... may I suggest you introduce yourself over on PC's New Member Introductions forum? Here's a link:
https://forums.psychcentral.com/new-...introductions/
There's a lot of support that can be available here on PC. The more you post, & reply to other members' posts, the more a part of the community you will become.

Plus there are the chat rooms where you'll be able to interact with other PC members in real time (once your first 5 posts have been reviewed & approved.) So please keep posting!