Take it to an independent garage for an oil change and ask them to see where the leak is, and give you an estimate before you authorise them to repair it.

I noticed that it has a small puddle of oil under it some times and the oil is very low in it. ..... I will be needing my car next month and I can’t afford to get a new one.

If you "can't afford to get a new one", then clearly you shouldn't allow the oil to get ""very low in it"

Topping up the oil is not really much more technical than putting fuel in the tank, and I assume you manage that OK.

Changing the oil is a bit more involved, but you don't have to do that (or have it done) very often if you don't short-trip (taking it around the neighbourhood a little sounds like short-tripping), and even less often if you have a significant oil leak, since you'll be topping up with fresh oil regularly.

Edited by edlithgow on 12/07/2019 at 06:08

Leaking oil is dangerous to other road users especially for motorbikes! This needs investigating and fixing.