Then do not switch to a home gym. My apartment is about 10 square meters so I’m in the same boat. And by boat I mean tiny apartment.

If you have the money, compared to a membership, this will eventually save you money, how quickly that point is reached depends on the local gym membership costs and your financial situation. Certainly you do not have to be “rich”, if a few hundred dollars to get started is only for the wealthy we have different definitions of that!

On the whole, investing in your health pays dividends greater than almost anything in life, it just isn’t appreciated till you see the health problems others get from an unhealthy lifestyle.