Many times, I forget to commit my edits to my git. And if I closed VSCode, I can't use ctrl-Z anymore. Because, I have git set up, I thought I could use something like an automatic commit every 30sec or so.
I have seen this extension btu ti's not open source, so I don't want to use it. I also found this but my programming skills aren't good enough to implement it.
I also wonder if using git in this way is a good option, as the git folder may get really heavy quickly (my git is only local, so I can handle a couple of gigab)
So what is the best way to achieve what I want to do?
I also wonder if using git in this way is a good option
No, that would pollute the history of your commits.
Using the extension "Local history" is a better approach, and does not rely on your VCS.
(and is open-source: github.com/zabel-xyz/local-history)
Every time you modify a file, a copy of the old contents is kept in the local history.
At any time, you can compare a file with any older version from the history.
It can help you out when you change or delete a file by accident.
The history can also help you out when your workspace has a catastrophic problem.