Steam Deck or Odin 2 Pro

Anyone here using an Odin 2 Pro? I can't decide which to get....the Odin or a Steam Deck. as for the Odin, I am very comfortable with Android. I have very lil experience with Linux. But it seems like I would have more options as far as games and consoles with the Steam Deck.

I currently have two retro handhelds...an Anbernic RG35XX and a Retroid Pocket 3+...really like both of those as far as portability and game play, but I can't play all the games I want to play...GameCube is pretty limited on the RP3+....and as for the RG35XX....it doesn't have Bluetooth or wifi.... which is a must for me the next go around. I also have the OG Game Boy handhelds which I love now that they have been modded with newer displays. Love my GBA and GBA SP. But I still have that desire to play newer games....really want to play Helldivers II.

So I don't have a PS5 or the newer Xbox...are those games available to play on the Steam Deck through Steam or are they remote only?