i used to feel the exact same way, i had around 3,000 followers (mostly people i didnāt know) and my account was public. i didnāt want to feel that way because its literally MY account so why should i be bothered about other peopleās opinions ect. so, i made my account private and i spent a few days slowly deleting people until i was left with those who i know and love and who wouldnāt make me feel any type of stress or anxiety.
now i post whatever i want, when i want and feel great about it!