Choosing your friends wisely is a form of self-care. Your energy is precious, don't waste it on the wrong people.
They are always complaining about their problems but never do anything to solve them. It's very draining.
They only call when they need something from you. Your relationship feels one-sided.
Nothing you do is ever good enough. They always find faults, pulling down your confidence.
If they gossip to you about others, they are probably gossiping about you to others too. Trust is zero.
They twist your words and make you doubt your own feelings and reality. This is very toxic for your mental health.