If your instance bans you, it’s because you did something to breach their terms. Sign up for a new instance and read the terms. And then read the terms of any instance whose communities you subscribe to, and when in that community, follow THOSE terms AND your home instance’s terms.
Even Reddit doesn’t ban people for the words they use. Subreddits sometimes do.
What any community bans you for is how you behave. Context and actions over time matter.