I personally like to do a phone reset after a major update and then reinstall apps as and when needed.
I only back up my photos, messages and contacts.
If you don't wanna do that you can 'wipe cache' and/ or 'repair apps' when there.
Check youtube videos on how to go about it.
If you don't wanna do the above.
1. Simply restart your phone.
2. Make sure apps are updated in both Google and Samsung store.
