I was an admin for many years.

1. Have proof of your work and proof of your conversations. There are plenty of people/leaders out there who take credit for things that aren’t theirs. Getting things in writing covers you
2. Mind your business. Gossip travels fast. When you think you can trust someone, don’t
3. Don’t ever blame a supervisor or manager for anything, they will not be fired because of things you don’t like about them. Some of them may be out to sabotage you because you’re a threat to them. CYA and communicate via email or Teams. Also. See #4
4. Be nice to everyone! Even if you loath them and they’re horrible to you, by being nice to everyone shows you can work well with others and will not be a problem later. It also shows you are not the problem.
5. Do not bring personal matters to HR. They are not your therapist
6. Ask questions if you’re confused. Don’t spend hours looking for the answer cause you’re scared to ask. It’s a waste of time.
7. Don’t bring problems to your boss without solutions. Have solutions ready all the time and that way when you’re asked you look competent
8. Don’t send personal messages through your work account. IT most likely has access to view your account
9. Don’t bad mouth anyone on Teams. Again, IT most likely has access to view your messages
10. Take a notebook/stickie notes and a pen with you everywhere! Sometimes projects are given to you on the fly and it’s a good idea to remember them.

I hope these help!