Hi Everybody,
I am sorry for the late response. I was to busy for almost 2 month and forgot to answer here.
Today I updated to lineage-22.2-20251022-microG-NO-PI-PATCH, and that did remind me that I have an open promise here.
On my Pro1 the new SIM card almost solved the battery drainage problem. The phone is still consuming a little bit more battery than it did before the update to LOS 22. That time I had to charge it every second day only. Now with the new SIM card the battery works for a full day again. That makes the Pro1 use-able for me.