Thunderbird is possessed

I have been using Thunderbird for years. My current version is 158.0 (32-bit). In recent months Thunderbird has become increasingly weird and annoying. These problems have occurred individually, not all at once, and each persists--that is, they are all and always present. 1. T'bird's counts of messages in folders is always much higher than the actual counts. 2. I tag messages with color, but T'bird deletes the color tags within a day. 3. Clicking a message doesn't change the message from Unread to Read--that is, the title stays bold. I can change the read/unread indication by clicking the button, but the change doesn't happen automatically. 4. If I drag a message to my wife's T'bird inbox, the act removes the message from my T'bird inbox, but it doesn't always remove it from the inbox at the Server. 5. Deleting a message from my T'bird inbox often also deletes the message just above it. This is the oldest problem, and when it first occurred I found that if I closed and immediately reopened T'bird the message would reappear in my T'bird inbox. Now it does not, although the message might still be in my inbox at the Server. 6. While I am reading a message, the list of messages often pops up to the top (oldest) message. The message I was reading doesn't disappear or otherwise change, but I have to scroll back down to it and click it again in order to delete it or move it to another folder. These problems are more than annoying. Can anybody help?