A person can workout on the cheap though, and still gain strength and mass. A few kettlebells and a pull up bar can deliver a crushing workout to even the most in fit person. Kettlebells in particular are easily portable.

Pull up bar is not something I can't install in my apartment as landlord won't approve. I am only renting so can't do many modifications here. I would love to have that option.

The door frame pull up bars are non-permanent, and can work in many cases. At most you might have to paint a bit.

If you're in a city there has to a playground nearby providing all sorts of options.

I think people just get too tied to a gym, when there are countless options to get really good workouts if the gym is unavailable for a period of time.

I don't think I can deadlift 140kg+ with a few kettlebells.

As someone who power lifted for many years I get it. I needed > 500 pounds in order to max. But, I also know that's on the extreme end. Even then though, give me a 70+ pound kettlebell and I can crush my posterior chain using cleans and snatches.

It is possible to get good workouts with minimal equipment.