Most users have between 20 and 50 apps but it all depends on your storage space and what you want. If you let most apps run in the background, then you have to worry about RAM and battery life. System apps also take up a lot of space and you can't change this requirement.
@G-ProPIA The answer depends on the person and what they need. There is no issue having lots of apps on your phone if you have the storage to support them.
Google Play store shows that I have a few hundred apps installed. Galaxy Store shows more. They are only using around 28% of my storage.
