This happens all the time. I used to be able to play Rocket League natively on my Linux PC. Then Epic bought it and simply pressed delete on the Linux port.
As much as that sucks it might be possible to play. I use the Hero Launcher to play the games from Epic through Proton. IDK if anticheat might mess you up, but you might try that
Same happened with facepunches Rust
And offered full refunds for those users, even if they had bought it five years prior.
I don't see the game in my library anymore, so I guess I ended up doing that.