The decentralized Instagram alternative is a great option if you want to back up your feed, focus on photo-sharing, or cut loose from Meta's empire entirely. And making the leap is surprisingly easy.
Kbin/Lemmy is the only Fediverse thing I've been able to get into...Mastodon and Pixelfed just don't have the things/people I want to follow. I only use Mastodon here and there thanks to the bird.makeup instance which clones people's twitter accounts. If I didn't...that feed would be a ghost town...Is there one that clones Instagram for Pixelfed?
The apps are listed on the official website. The official app is in public beta, but I hope it gets a public release soon. You can follow @pixelfed@mastodon.social on mastodon for updates. There are also 3rd party apps, but I haven't tried any.