How many of you install games outside Steam on your Decks? Do you find the process easy?

I’m a hobbyist game developer myself, and I’m looking into making games especially designed for the Steam Deck. However, for freeware games, the $100 price per title on the Steam store is a bit too steep. I wish there was an easy-to-use alternative store on the Deck, but since that’s not the case, I’m wondering if it would make any sense to develop games for the Deck and publish them, for example, on Itch.io.

(As a proof of concept, I created this step-by-step guide for a hacky Steam Deck version of my old game, Soccer Physics. I think it still applies, even though it’s a year-old build/guide: https://www.ottoojala.com/soccerphysicssteamdeck/ )