You’re going to have to overcome that homeschooling. It’s going to be difficult to make up for the loss of several years of social interaction in high school. Those are critical years. For now, I suggest you try not to focus on your goal of finding a girlfriend, but instead get used to spending time with women. Learn to be comfortable, learn to be confident. You can use the dating apps to simply interact with women. Work on getting them to answer you. Work on your approach, work on the way you present yourself. Be honest, be yourself. You don’t have to tell them that you are shy or unsophisticated.