Go to shadowban.eu and put in your handle. It will tell you if and how much you're shadowbanned.
I usually get banned on two out of the four categories. I notice when my 'impressions' go from 600+ per tweet down to 10-15.
There are different levels of shadowbanning. In my case, it's usually just that no one but my followers (24 beautiful patriots at the moment) can see my tweets.
I have an anonymous account, so haven't invited anyone I know. My followers are hard earned.
I will do that now, thanks Kit.
And then I'm going to sleep so I can do that other thing Q requests. Having trouble sleeping because it is election day. I've got to vote, take 2 others to vote, then sit at the hospital with a friend's husband so she can go vote. I'm just too excited about seeing our red tsunami, sleep is elusive.