First of All Before Anything Make Sure you Have Enough Storage from Settings -> Storage Then Check How Much
Free Storage do you Have ? At least You Should Have Between 15GB -> 50GB Free Storage For Roms
Go to This Roms Page
Choose The Rom you would Like To Use but Before Everthing Something you Should Know
First, Not All Roms Perform the Same so Don't Expcet for Windows 11 To Run Exactily the Same as Windows 95
Second, Some Roms Needs a Flagship Phone like Windows 11, Windows 10, Kali Linux and etc...
Third, Make Sure you Memorize the Password of The Rom you Downloaded if The Rom you Downloaded Has One
If not Just When it Asks You For the Password Press Enter and Continue Normally
Fourth, Old Linux Roms like Red hat 5.2.0, SuSE 5.2.0 and etc... Does not Launch GUI Automatically So
After Logining in Type This Command "startx" and It Will Start X11
After Everything is Clear and you Choosed your Rom Just Choose if you Want it in x86 or x64
Then Just Wait for the Rom to be Downloaded
It Might be Slow Bcuz Multiple People are Downloading Roms at the Same Time as You
Go to This How to Import Roms Page That will Explain How
After Importing The Rom you like All you Have to Do is to Press on the Rom and Then Your OS
Will Start Normally.