I've had people send me reels as links to ddinstagram.com and kkinstagram.com, which at least in Telegram, get transformed into a video that can be played inline from the link preview and downloaded.

Depends if you want an alternate front-end and you can self-host, or you're looking for a third party.

For the former, I generally look at what LibRedirect has as options: https://libredirect.manerakai.com/

Proxigram seems unmaintained, but kittygram seems to be actively developed: https://codeberg.org/irelephant/kittygram