Where are you trying to install IDM?
TBH I don't use Win 11, as you mentioned in one of your other threads, therefore I don't know how different things are between Win 10 and Win 11. Have you tried installing to %AppData% because that should allow write access?
In Win 10 when I use explorer to copy to %ProgramFiles% it prompts me for Admin permission to copy to that folder but I don't know how different things are in Win 11 TBH. Maybe there is a setting in Win 11 which allows things to be handled in the same way as Win 10?
Installing to %ProgramFiles% or the similar x86 folder will need Admin permissions and cracks/patches will therefore need Admin permissions to do anything in those folders which I don't like TBH. Installing to AppData does seem to work around that to some degree. Running some suspicious crack as Admin is a no no for me and I prefer to avoid taking such risks.
No follow up by you in over 5 weeks probably mean this is probably all irrelevant.