Python version change

I use a MacBook version 12.1

I want to change the python version

terminal -(base) hyeyunpark@Hy-Mac ~ % python --version

Python 3.9.7

(base) hyeyunpark@Hyeyuns-Mac ~ %

I deleted /Library/Frameworks/Python.framework/Versions/3.9 (now only have Library/Frameworks/Python.framework/Versions/3.10)

and when I used the python10 keyword, it showed

terminal -

(base) hyeyunpark@Hyeyuns-Mac ~ % python3.10 --version

Python 3.10.9

(base) hyeyunpark@Hyeyuns-Mac ~ % ln -s /usr/local/bin/python3.10 /usr/local/bin/python

ln: /usr/local/bin/python: File exists

(base) hyeyunpark@Hyeyuns-Mac ~ % python3.10 --version

Python 3.10.9

(base) hyeyunpark@Hyeyuns-Mac ~ % /usr/local/bin/python3.10 --version

Python 3.10.10

(base) hyeyunpark@Hyeyuns-Mac ~ % echo $PATH

/opt/anaconda3/bin:/opt/anaconda3/condabin:/Library/Frameworks/Python.framework/Versions/3.10/bin:/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/share/dotnet:~/.dotnet/tools:/Library/Apple/usr/bin

(base) hyeyunpark@Hyeyuns-Mac ~ % export PATH="/usr/local/bin:$PATH"

(base) hyeyunpark@Hyeyuns-Mac ~ % python --version

Python 3.9.7

(base) hyeyunpark@Hyeyuns-Mac ~ %

I want to change Python 3.10.9

what is the problem ??