The only business that small scale would be some kind of digital services, dropshipping products and stuff like that. To me, that seems very unstable and not very profitable since everyone is running to that option, influenced by fake millionaires and social media figures. You can make a profit but you have to add some originality or some spice to it, so you get in front of everyone else.

If you want a real small scale business (physical, registered), you must have capital. If you aren't lucky enough to ask family members for a loan/investment, you have to go to a bank and take a big fat loan, it's just how it works.
Hopefully you have some hobby/interest in some topic and even better, experience at a job (in the branch you do business in), to easily pick a business branch in which you have experience and knowledge.