I don't know the situation in Mexico at all so please take my humble opinion with a pinch of salt. About 3 years ago I was asked a similar question so I wrote a blog post about it:
I think most of that still applies - no matter if you're in Mexico or the EU (as in my case).
From my additional 3 years of experience since then I can't emphasise enough that networking is absolutely key!
Talk to a lot of potential customers and peers (fellow developers, particularly those who already run their own consulting business). Go to meetups and industry events. Follow up with potential clients on a regular basis.
You might want to work with recruiters as well if you have to but having direct client connections in my opinion is the only long term way to run a sustainable consulting business.
I'd advise against using freelancing sites for the reasons you mentioned. It's usually a race to the bottom in terms of pricing because you're literally competing with the whole world.
https://bjoernkw.com/2013/04/28/starting-a-software-consulti...
I think most of that still applies - no matter if you're in Mexico or the EU (as in my case).
From my additional 3 years of experience since then I can't emphasise enough that networking is absolutely key! Talk to a lot of potential customers and peers (fellow developers, particularly those who already run their own consulting business). Go to meetups and industry events. Follow up with potential clients on a regular basis.
You might want to work with recruiters as well if you have to but having direct client connections in my opinion is the only long term way to run a sustainable consulting business.
I'd advise against using freelancing sites for the reasons you mentioned. It's usually a race to the bottom in terms of pricing because you're literally competing with the whole world.