Sorry to hear that happened. It's unfortunate that freedom of speech is so often impeded, particularly online where it can seem like the expectation in some channels unfortunately involves minimizing dialogue for a "friendly environment". It's essential to understand there are legal limitations abridged with the privilege of free expression within various environments which come with rights and obligations.
Regardless, platforms who regulate platforms has pros and cons to them. While it ensures clear rules concerning dialogues acceptable on their website,censorship curtails many debates central to social progression, However communities protect against hate speeches whether covert or expressed but suppress freedom of opinion. Turing these sites into echo chambers where each protected party's discourse loses value.
Nonetheless if you’ve been unjustly banned on any major social platform I would recommend usong Mastodon,diaspora* and similar platforms that focus primarily censoring only illegal activities; not disrupting normal engagement.!
