That looks like so much fun, but I've never been able to hold up my body weight, even when I was a child in elementary school. We used to have Physical Fitness Week and we did chin ups, chin hangs, pull ups, etc. I Failed miserably on those that required me to hold All of my chunky self up while the rest is suspended in the air..free air.. and gravity is working double time and 100% against you😢 #letgo
Everybody starts in the same spot and being able to hold up your body weight is the first step. Some progress faster than others, but eventually everyone gets stronger. Just stay consistent and determined!
I build it myself, but unfortunately I don't have a blueprint to share. But essentially you need 2x2 (inches) posts and galvanized plumbing pipes available at your local home improvement store (e.g. The Home Depot in the US).