Moto G Power acting weird

I have been using my new Moto G Power 2020 for about three months.
At first it performed perfectly and I was very pleased.
But lately (within the past month, I think) it has been very erratic. Apps open at random on their own, and some apps don’t perform well and are sluggish.
Could this have anything to do with the android 11 version that I downloaded a few weeks ago? I’m not sure if the problems started after the new version, but it just occurred to me that they might be related.

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