I use KRename for renaming multiple files.

how can you identify season from the file name?

You can take a look at "sonarr", it's made for managing your tv-shows and it can automatic rename and organize your files, with customizable naming schem.

you can try rename: https://www.man7.org/linux/man-pages/man1/rename.1.html

or
rename 's/expression/replacement/' filename

select range of episodes per season then add season number (eg S01) in replacement string.

then restart numbering for next set of episodes (eg 01 to 12) and add S02. and so on. more tedious than the gui Rename method but doable.

krenamer can do this. It just is a regex front end. You could do it with a shell script too.

Would the tvnamer utility help?

or if you are comfortable with command line and some replacement shenanigans, there is always mmv

In zsh you can use zmv for this. Another command line solution is find but it's a bit harder to figure out the correct command in my experience.

Please don't use spaces in your *nix filenames, that is just bad. To answer your question, use a bash script. Chatgpt can probably even make it for you if you don't know how to write it.

There are various GUI tools (eg., gprename, krename) but I prefer qmv, a CLI tool from the renameutils package. It opens filenames into a vim (or your default editor) session, with which you can use global regex search/replace commands to rename files.

I use nomino for this purpose.

This can be done natively in Thunar if you happen to use XFCE.

I use the bulk renamer from thunar https://docs.xfce.org/xfce/thunar/bulk-renamer/start

Why not just do this with a for loop in the terminal? I don’t think you need to over complicate it by downloading another program.