As an American you can easily get into any country making decent salary (by European standards) as an English teacher. Try Poland, they accept basically anyone unless you’re Muslim

Yeah I just hope they move their operations to some more democratic country since their location in the US apparently doesn’t help them anyways

I’m afraid there aren’t any. You can use the Bypass Paywalls Clean extension though

Most of the possible contenders lack video calls and some also other needs mentioned by the OP. Nextcloud Talk has them all

Mind you that they keep paywalling previously free features. Example of them paywalling group calls and their Playbooks feature (v1 - generally available, v2 - in paid plans only): https://docs.mattermost.com/product-overview/mattermost-v10-changelog.html

Nextcloud Talk - actually free and fully-fledged unlike the alternatives that either require you to pay money or don’t support more advanced features like video calls