why my posts does not make money? can any one help?

Dear steemit friends, I almost have 3 post a day on steemit. I do care to make guality posts but still not making money.
I see that sometimes some poeple have to upvotes but earn much money but even 10 upvotes may not earn me 1 dollars.

without being part of a group is there a possibilty to make money or must I join a group or make my own group?
I feel that even if you make so good guality content still you may not make any money but even if you have so simple and useless post but being part of a community helps you to have many upvotes.

I'am open for any opinions,ideas etc.

Thanks