I am in a similar position, yes. I've resisted for so many years, but Instagram right now is the only place where some of the local organizations I'm interested in post. Clubs, town events, even leftist social centers who are usually sensible to online privacy and megacorp dependence sometimes only have an instagram or facebook page.

Right now I have a text note with the urls to the websites of the instagram pages that don't have a newsletter/RSS feed. And another note with the link to their instagram pages, that I sometimes check out. Luckily you still don't necessarily need to login to access an account's recent posts from the browser, so as long as you periodically clear your cookies, a browser will do.

I also have been trying to convince some of these pages to create an account on Mastodon or use Gancio, if available. Even a Telegram channel would suffice. Some of them (two) did, but stopped to update it after a few months because most reach comes from facebook/instagram and they won't bother to post stuff on another platform