I think you can try to fix the door yourself, there are a lot of videos on the Internet on this subject, but I would recommend you contact the professionals, because you can break the mechanism or break the glass. It seems easy to fix the door, but believe it requires some knowledge. In addition, you will spend a lot of time and effort on this, in my opinion it's much easier to find a company on the Internet that will quickly fix your door. For example, this company https://24hr-sliding-door-repair.com/
. They work around the clock.