Bowling alleys are expensive which is why they cater to leagues to help pay for the equipment. You are looking at $30-40k/lane for the equipment, you need shoes, kitchen equipment, maintenance equipment for the lanes, the building itself so you are probably looking at $3M just to open in a leased space (more if you purchase/build).
I know it is a regional thing, but for the novelty, you might look at Duckpin bowling https://en.wikipedia.org/wiki/Duckpin_bowling
Find a Sugar Daddy.
What skills/interests do you have? The concept of Passive income (I can sit back and do nothing and let the money roll in) is really a fallacy. It takes a lot of hard work to establish a successful business and then you can find someone to manage what you have built.