Is it impossible to open my own restaurant without loans? I’m super worried it won’t work out. Then what to do with loans, I have no clue.

If you have finances you can just invest, why not? But in practice I almost always see people going for loans, because opening even a small restaurant is actually really expensive. And the expenses go on everything, including extra software. I use Eat App, more about which is here, to plan shifts, manage staff, make schedules. That’s just a small part of its functions, and it turned out to be a really good investment.