lovila8834 I wonder am I doing something wrong or this is normal?
Maybe something in between?
I suspect a lot of users have a smaller number of apps installed. My app count (from Settings, Apps, "Show all ____") is 28, of which I installed 10 and the remainder came with GrapheneOS. Of those there are two I basically never use, that are disabled and could be deleted. Personally I don't know how I could find the time to research the reliability and privacy of 100-plus apps.
Overall, I suspect most users don't have 160 apps, so I suspect for most users AOT-compiling apps doesn't take very long. So I'm not saying you're doing "something wrong", but the number of apps you have might be atypical.