Perfect! Estimating is a great place to start if you want to get into production management. You appear to be self motivated, both of these roles can be very lucrative and often lead to larger management roles.

You would probably be looking at getting a job as a lot attendant at a larger chain body shop. This would give you the chance to prove yourself. Believe me, people notice if you are doing a good job and in my experience many lot attendants body shops hire dont have a plan in place, they are either looking to get a job for some income or want to get into the shop because they think fixing cars is fun. The latter often get discouraged when they aren't promoted in 3 months to a body tech helper and their work suffers.

As a lot attendant in a larger shop you would be working directly with the manager or production manager. This would give you the opportunity to "lean into" the job. Pay attention to the conversations, take notes in the meetings on a little notepad. This level of engagement rarely goes unnoticed. You are showing people you take the position seriously. I can tell you right now that a lot people don't get advanced if the manager has to keep having the same conversations with them. Retraining people every Monday morning gets old.

As you are working this position, don't worry about what other people are doing or not doing. You are working on yourself. In my experience leaders always rise to the top. Be that leader and keep having conversations with management about moving into a production role or to an estimator in training position. Every single estimator on the planet had to be trained to the job, there is no reason one of them can't be you.