>>106584802
>I have heard of bottles and firejail but don't trust their sandboxing capabilities yet.
Bottles by default doesn't have permissions to affect your home directory and especially not your system. Any malware would be contained inside it unless a severe security vulnerability is found in flatpak.
You can test this in a VM if you want. Install Bottles, set up a bottle, then within it run some malware which tries to recursively wipe all data from your disk. It should only affect the wine prefix and not any data outside of Bottles.
>I exclusively only play Japanese eroge
>doesn't have Proton support.
Are you sure about that? I've played a bunch of Asian games and all of them work fine in Proton. That said, only as of Proton 10 (which is still in beta) did the video cutscenes start playing normally (prior to it, cutscenes in some JP games were open in a separate window which resulted in a black in-game screen).
If you're talking about VNs, some of them rely exclusively on your system fonts and locale. You can set this up in the Bottles GUI very easily. I have a bottle set up on my main PC which is exclusively made for Asian games. Iirc you have to set your system locale to JP, install the asian fonts package within Bottles Dependencies, and I think there's one more thing I installed but I can't recall if it's optional or not. In any case, you can ask ChatGPT to help you set it up, that's what I did and things work great.