I have a similar issue with Matrix as well... even though it's federated, most large rooms use the same bots and blocklists so I end up getting banned from many rooms before I've even attempted to join.

Apparently my monopoly ISP rotates IPs fairly often and I am sharing them with people that have been doing bad things with them, so not only are many Matrix channels blocked but even large regular websites like etsy or locals are completely blocked for me as well. Anything with a CF captcha is also an infinite loop.