What you're talking about was reported in 4 out of the 30,000 Moderna vaccina trial, only 3 of whom actually got the vaccine by the way. 4 of the 43,000 participants in the Pfizer reported the same.
Bell's palsy happens to 1 in 10,000 of the general population - nothing to do with COVID or the vaccine. As you can see, these numbers are entirely consistent with each other.
There's a simple explanation: you're reading a bunch of crap without questioning it. You're being manipulated to believe things that aren't true.