Writing code can be similar to writing tutorials. In both cases, you’ll typically need to create and work on multiple drafts before reaching the final version. In an ideal setting, you would write code for a feature, add that code to the staging area...
This sounds all well and good. But I find in practice it never works very well. Too easy to gain a conflict which then messes with the stash (things remain in the stash and need to be dropped if you remember to). I always found it a pain to manage.
These days I just commit everything to master. When I start work on one feature to realise I need something else or to refactor something else first the I do that work, patch commit the changes, create a branch and checkout a new worktree, cherry pick the changes and push that branch to create a pull request. Then continue with the previous work while I wait to get the previous work merged.
Have a script which basically lets me do all that with a single command. And I never need to manage the stash. The only time I use the stash is with a rebase or pull etc with the --auto-stash flag. Which pops things off when it’s done anyway. The stash only really works for very temporary stuff like that.