the one thing linux really hasnt been made on par with winblows yet is the dreadful amount of options for android simulation -the most popular choice seems to be Waydroid, but its such an unneeded hassle to set up at all -genymotion is just slow -and than you have things like android x86 which entirely defeat the point of an emulator
The generic answer is usually that someone hasn’t felt the need to create and release one.
Open source basically means you get whatever someone else felt like creating, and they’ll usually create it to suit themselves first and foremost (which may mean having a poor user interface, or certain limitations or performance quirks).
BlueStacks is cross platform, but I have never used it so no idea what the performance is gonna be like.It’s Windows only with a macOS port that isn’t even out yet.
And nevermind the fact it’s sketchy as fuck.