HELP 2011 MacBook Pro

hello, i have a late 2011 mac book pro with a dead amd gpu but with my problem is i got it up and running after 4 day of hard work and then i did not like the os that is was on with opencore so i whiped it. Idk if i cant get back into macOS i have been trying to do this for around a month now. i just want to know is there a way to get any macOS on a new HDD to try to get this working so i can redownload opencore.
PS(this is the only mac in my house but i do have a windows 11 pc but does not run any VM)

submitted by /u/Any-Seaweed4392
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