Door trim makes itself independent

Hello municipality First of all FROHE OSTERN ….. and then immediately to my problem: The decorative strip at the door at the rear left is detached in front and is pressed against the driver’s door with every door opening and squeezed. In theory I would have to be able to get it back in shape with a hot air gun, but how can I get it fixed then? Underneath is such a kind of sheet metal strip, which I also have to bend something straight. Has anyone already had experience with it? I assume that double-sided HIIIEEELFEEEE…. Greeting from the resin Mav