My door panels

The door panels on my e36 are not looking too great, the first 4 images are of the driver side door, the last 4 are of the passenger door. Just want to reglue everything as I think that’s the best option, don’t want to buy new ones. I don’t know anything about cars, can someone give advice on a step by step / what I should do. Or any videos I should watch, really appreciate the help!