Can bodyweight be a good alternative for equipment?

Tephra
Recently I wanted to incorporate strength training into my workout however at my gym usually every time I go there the weights section is packed.. that badly that you have to stand and wait your turn. I was going to get up early, say 4-5am in the morning and go to the gym where there won't be as many people. However I wanted to know if bodyweight is a good alternative for equipment, if so I was going to do strength training with my bodyweight instead?
I also downloaded freeletics for bodyweight training to see if any of those exercises will help me - I'm pretty much an expert in cardio but strength training is not my forte.

Thanks! :)
Can bodyweight be a good alternative for equipment?
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