It's always the same with that kind of question.
If you have skills, use them. Maybe with an online job that pays you bitcoins, maybe with a real job where you earn fiat.
When you have no skills, well, it's gonna be hard. Money comes not out of nowhere.
There are a lot of people out there without any skills all wondering how they can earn money.
Those who have found a way won't tell. They don't need the competition.
Precisely it is the skill that will help anyone to make some Btc . It's mostly the freelancing or trading where they bulk of money can be made . Like trading is obviously risky job but with the right skill freelancing can give you multiple projects at same time and you get paid in Btc .
Also for beginners mostly different campaigns and micro task can help them to earn some Btc .