iMessage notifications

I was wondering if anyone knows how I could fix this or why this is even an issue. I have the pro max Incase that makes any difference at all and I have the latest software updates. Ever since I got this phone I have had issues with getting notifications when I get a text (which I have never had this problem with any other iPhone I’ve had, I also don’t think it’s software related just because of how long it’s been going on and the fact that there has been at least 1 more update since getting this phone and it didn’t change anything). The little red indicator on the home screen shows up when I get a text but I don’t get any notification. Not a banner or in my Notification Center. I have all notifications turned on in my settings and I’ve tried turning them on and off but it hasn’t made a difference. I’ve also tried re-starting my phone which helps sometimes but sometimes it still doesn’t help but it always comes back a few hours later. I have all sound on my phone on and my ringer is all the way up un-silenced. I know it’s not an issue with notifications overall because every other application I have notifications turned on for I’m still getting and never have issues with but for some reason iMessage refuses to send me notifications. Sorry this is so long I just wanted to be as detailed as possible.