I use msplit on my android phone, and I enter my runs on my iPad, I don't stream cause I can't record videos for that long, and I have no other way to submit my runs cause I have no working computer.

Are there any alternatives for this?

Depending on the community, you can "sometimes" submit your run without a proof.
Don't forget it's better to show a proof.

Could I just take a picture(s) of the splits all typed out and submit them?

Some leaderboards accept that, some don't. You could either ask them directly, or just try to submit it.

Ask the mods of the game?

Yes, ask the mods of the game.

Alright, thank you