Cellular Data randomly turns off

I’ve seen a few similar questions regarding this issue. However all answers/methods have not worked for me. Basically when I am playing a game, watching a video, checking a random app. My cellar data decides to turn itself off, and take forever to come back on. Once it comes back on, it’ll either keep turning off and on for a minute unless I do airplane mode, or it won’t come back on in general and when I open control center the cell air data button is greyed out ( disabled, locked) and it will stay off unless I turn on airplane mode and turn it off.

This has been happening for about a year, I didn’t mind it until I lost my home in a fire and I am now required to use hotspot etc.

As far as entertainment, I’ve lost countless games because my data decides it’s time for me to lose and turn off on its own.

Before I’m told to try any “Resets” I’ve done

• hard reset
• network reset
• settings reset
• phone reset

also I’ve tired

• changing screen time settings as instructed

• turned off my LTE and try 3G

• done all the roaming setting stuff

etc

There has to be something I am missing. I’ve done all of basic troubleshooting. Yes I even checked SIM card. Why is this is thing? How can I fix this once and for all.

Best

Below are screenshots from a screen recording. Data turns off by itself, then “no service” even though I’m in a great area, then cellular button greys out and does not respond when I try to turn it back on.