Minecraft on android smartphone freezes for 1 sec every 30sec to a minute

The game freezes for 1 second, and this reoccurs for every 30 seconds to a minute.

This wasnt the case a few months ago when i first started playing on my phone.

The android version is 7.0 but the bug occured prior to the update.

And the minecraft version is 1.21.100.20 but there the bug also occured before i signed up for the beta version.

Im just wondering why the bug happens now, but not back in the day, a few months ago when i first started playing on my phone..

So something in this timeframe must have caused the bug.