Slide wash room with the bifold is uneven

Hi all, The door of my flat has 3 hinges like on the pictures and it tends to close itself, which is annoying. I'd like it to just stay open however widely it is. Does anyone know a way to adjust these hinges to allow that? Thanks

Hello all! I have an interior door that needs replacing - I know I'm going to replace the door but I'm unsure on whether I should get a prehung and replace the frame or just use the existing frame? Right now it's a stained oak frame which is in ok shape. I'm not exactly sure what the finish is on it, but it's a darker color and somewhat shiny. The new trim and door will be white so I'd either need to sand it down and prime, then paint it or just rip it out and get a pre-hung door with a new frame. Are there pro's and con's to this either way? The door is a 'solid core' and will have to be trimmed down no matter what. I'd have to trim down the new frame too if I go that route. I've never replaced a door before so either way this is all new to me...thanks!