I am a daft noob and installed homebrew 3 times i think?

I installed homebrew on my Macbook air back in 2017 and had some issues with Python 2.7 vs 3.? at the time. I screwed around with directories, never really got it working.

Fast forward to today. I want to use Python for work project.
However, I really botched setup yet again. I dragged Python 2.7 and 3.x to trash, and installed homebrew. Ran brew doctor and I think I’ve now installed 2-3 versions of hombrew…

What do I do? I’ve spent 18 hours on this over past 3-4 days. I’m embarrassed that I can’t find anything on Stack Overflow. I apologize for my incompetence.

If anyone has a moment to share advice, it would be much appreciated.

Happy Thanksgiving!

Errors/warnings:
Warning: Unbrewed dylibs were found in /usr/local/lib.
If you didn’t put them there on purpose they could cause problems when
building Homebrew formulae, and may need to be deleted.

Unexpected dylibs:
/usr/local/lib/libtcl8.6.dylib
/usr/local/lib/libtk8.6.dylib

Warning: Unbrewed header files were found in /usr/local/include.
If you didn’t put them there on purpose they could cause problems when
building Homebrew formulae, and may need to be deleted.

Unexpected header files:
/usr/local/include/fakemysql.h
/usr/local/include/fakepq.h
/usr/local/include/fakesql.h
/usr/local/include/itcl.h
/usr/local/include/itcl2TclOO.h
/usr/local/include/itclDecls.h
/usr/local/include/itclInt.h
/usr/local/include/itclIntDecls.h
/usr/local/include/itclMigrate2TclCore.h
/usr/local/include/itclTclIntStubsFcn.h
/usr/local/include/mysqlStubs.h
/usr/local/include/odbcStubs.h
/usr/local/include/pqStubs.h
/usr/local/include/tcl.h
/usr/local/include/tclDecls.h
/usr/local/include/tclOO.h
/usr/local/include/tclOODecls.h
/usr/local/include/tclPlatDecls.h
/usr/local/include/tclThread.h
/usr/local/include/tclTomMath.h
/usr/local/include/tclTomMathDecls.h
/usr/local/include/tdbc.h
/usr/local/include/tdbcDecls.h
/usr/local/include/tdbcInt.h
/usr/local/include/tk.h
/usr/local/include/tkDecls.h
/usr/local/include/tkPlatDecls.h

Warning: Unbrewed .pc files were found in /usr/local/lib/pkgconfig.
If you didn’t put them there on purpose they could cause problems when
building Homebrew formulae, and may need to be deleted.

Unexpected .pc files:
/usr/local/lib/pkgconfig/tcl.pc
/usr/local/lib/pkgconfig/tk.pc

Warning: Unbrewed static libraries were found in /usr/local/lib.
If you didn’t put them there on purpose they could cause problems when
building Homebrew formulae, and may need to be deleted.

Unexpected static libraries:
/usr/local/lib/libtclstub8.6.a
/usr/local/lib/libtkstub8.6.a

Warning: Some installed formulae are missing dependencies.
You should brew install the missing dependencies:
brew install openssl@1.1

So what is the actual problem you’re trying to solve? Having homebrew 3 times wouldn’t really cause any issues.