>>714200010
Doom is pretty clunky nowadays in my opinion, games such as Duke Nukem, Blood and Quake aged better

if you want a free entry point, you can download Shadow Warrior for free

https://store.steampowered.com/app/238070/Shadow_Warrior_Classic_1997/

then install Build GDX

https://m210.duke4.net/index.php/downloads/download/8-java/53-buildgdx

Shadow Warrior is the "weakest" of the holy Build Engine trinity (Duke Nukem, Blood, Shadow Warrior) but is still a good game, and with that source port, it feels reasonably modern

difficulty can be a bitch