If you are interested in making money online, there are a variety of site reviews right on trend, in the "review a product / website" section. Many are put by me. I work with 2 forums where I post (trends and another one, I don't want to give a name not to be considered an advertisement to cause me problems here), a phone application where I complete surveys and that's about it.
It depends on what you like to do and how much time you have available. There are many methods. Do you know how to do something? You can sell certain services on the internet.
Or maybe you are skilled in other fields: design, site creator, etc. Or any other such field.