Now that the code for Command & Conquer Generals (along with other classic RTS games from EA) is open source, the community is working on getting it working natively on Linux without the need of Wine / Proton.
Read the full article here: https://www.gamingonlinux.com/2025/03/linux-support-for-command-conquer-generals-zero-hour-is-coming-along-now-its-open-source/