Hey there I would like some help. (Complete noob here)Looking into this, because a friend invited me to an "investment pyramid scheme kinda school", but I still see him making some money, so it got me interested.

About me:

I'm 30 y/o from Mexico.
Employed, making shit money.
I would like to begin investing in stocks or binary options (I have a budget of $100 usd which right now this is a lot for me). Going to a broker or invest manager is not an option because of this. I would like to do it on my own.
Objectives would be to make an additional income or savings account.
Time frame or horizon, not really a thing for me, I'm looking at this like a long term kind of deal.
I would like to start with low risk investments, or maybe 80-20.
No holdings or assets, literal broke tbh.
As for debt, I have a little over $500 usd in credit card debt. Maybe not a lot for some, but really high for me rn.
A friend of mine recommended I use Olymptrade which is available to use here in Mexico. (I tried looking for robinhood or 1m investment, but they're not available here).

I'm looking for someone who can give me some recommendations on how to start/ or if this platform is ok?
I've been playing around with it, but I noticed that it doesn't have many stocks that are interesting to me.

Also another question would be, how to buy stocks and have them on my "wallet" for indefinite time? I see that some platforms like eToro are "good" with this?

Any help will be greatly apreciated!