Bro elbow lever is about balance and not about strength, all you got to do is to find a flat sturdy area and put your elbows under your waist. Lean forward and balance, the strength requirements is only 15 push ups. And you can learn it in 15 minutes, but usually it takes 1 week to clean up the form

For me it depends on the weather because sometimes I train outside. Nevertheless I train the same as long as I'm warm up and ready in my mind

@Claire Breke I've been doing this for about 2 years

Squats is the king of leg exercises. Just do 3 sets at around 8-12 reps for hypertrophy. Remember to increase the weight if you consistently hit 10-12 reps for 3 sets

I recommend training your grip strength by hanging on the bar until you can hang for 1 minute. While training for your grip you train your back and biceps by doing backpack curls and rows. (You can use dumbbells if you have) You can also do Australian pull ups with your table or at the park. If you have a pull up bar. Put it lower so you can train the Australian pull up. Depending on your level, you can get it at around 2-3 weeks maybe faster if you have basic strength