Door hinges squeak
The cause of squeaking car doors is usually missing or dried out lubrication on the hinges or joints of door holders.
So that the door hinges (joints) do not squeak, you simply have to lubricate them. A lubricant in spray form is best suited for this. It has penetrating properties: if you inject it, thanks to its surface-active effect, the lubrication penetrates to the axle pawls.