Before installing the pull-up bar, determine what your wall is made of, and then select the appropriate fasteners that will definitely support your weight. I think chemical anchors will work for almost any wall. That's if you want to be safe and secure the bar. Generally, plastic anchors work great for a good, high-quality wall. You can safely install the bar on them without worrying about their weight capacity.
Here are the videos that helped me install my pull-up bar:
1) • Как сделать химический анкер своими руками...
2) • Газоблок, газобетон. Секретный крепеж. Дей...