Keep in mind I have no idea what products are available in Mexico so be sure to check and double check product labels!

Start simple. Cleanser (low poo or cowash), rinse out conditioner, gel.

If you don't want to buy from the US, you just have to be diligent with checking labels. Looks like from your sig that you have Herbal Essences which has good gels, Totally Twisted and Set Me Up.

What are you looking for specificallY?
Coarse texture, normal-high porosity, normal elasticity (Komaza Care), very weak waves
cleanser: Redken Fresh Curls Shampoo, CJ Daily Fix

rinse out: GVP Conditioning Balm, CJ Beauticurls, CJ Smoothing

jellies/creams: CR Curl Maker, KCCC
gels: CJ CQ, CJ Pattern Pusha, BRHG