iPhone XS became buggy a while back. IOS 13.3 has not fixed it

iPhone XS has become buggy. This started a few months back. Several apps freeze or disappear. Safari freezes regularly which is the most annoying. Restarting the phone sometimes sorts it but sometimes not. This can be exasperating.

Not sure if it began with an IOS update but it has persisted now through two or more new updates.

I have had only iPhones going back to 3Gs. The reliability is the attraction.