Bazzite, the Fedora-based version of Linux that's designed for the next generation of Linux gaming has a fresh release out with some great improvements, especially for gaming handhelds like the Steam Deck OLED, Lenovo Legion Go, ASUS ROG Ally and others.
I don’t think so, the only thing cheaper than the Steam Deck is a Nintendo Switch, but that’s a whole different machine and also probably doesn’t support it