BMw alarm going off when stationary

I have a 2014 520D, I’ve had this issue on and off for about 2 years

Alarm would go off randomly when I lock the car or after, for after a few hours or middle of the night even if I press twice to disable tilt sensor,. I had the battery replaced which didn’t solve it & removed the alarm module so now the lights just flash randomly.

I’ve brought it to 4 different garages and I’ve either told me to replace battery’s which didn’t stop it or just couldn’t find an issue. Was told the sensors were fine. It also never seems to trigger when it’s at the garage. It’s been a nightmare and I’m almost ready to get rid of it.

Would anyone have some advice.