Pixelfed, a decentralized alternative to Instagram, added a migration feature for grabbing your images. I tried it out and wrote a guide: https://www.wired.com/story/migrate-move-instagram-to-pixelfed-no-tracking-fediverse/
Mastodon is the best way to keep up with what's happening.
Follow anyone across the fediverse and see it all in chronological order. No algorithms, ads, or clickbait in sight.