Putting Abandonware PC Games on Steam Deck

Hi Guys, I was researching how to put old abandonware games (Games that were released on PC long ago but are not on modern platforms like Steam, GOG, Epic Store) on my Steam Deck like how I used to put on my Gaming PC like Bungie’s Oni, Old Spiderman games, Heavy Metal FAKK 2, etc. but the process of putting old PC games on Linux seems very complicated and long.

Do you guys put abandonware games on your steam deck?