No sound notification when phone is locked
I have been missing a lot of notification such as as messages, messenger, emails, missed calls etc. I tried to fix the issue myself looking for solutions on the web and support page but looks like I dont have the proper solutions for this problem. I got this phone as I thought that it will be better than my pixel 4 xl but right now having this issue is giving me negative impact with my work and personal. I have missed alot since. I was told I was ignoring calls from my family and friends when a call was missed. I already tried different methods of fixing the problem and this includes erasing and resetting the phone. I hope that you guys can provide a better and easy solution. I came from android and I was told to get iPhone as it is easier and better support for end user. Please provide a better solution and please do not leave your costumers in a situation like this as it impacts daily life.
thanks
iPhone 12 Pro Max, iOS 14