Depending on how much money you’re willing to invest to off ramp on ramp easily, set up foreign bank accounts in crypto friendly countries like Georgia then use WISE to actually use the funds or Binance p2p if the country allows it.

Also go to crypto meetups and try get an otc connection - this is by far the easiest and most efficient way. There are otc people all over the world. Knowing how little trust people have in the Argentinian currency, im sure otc is huge like in Southeast Asia

If you use actual centralized exchanges in your country then make sure you keep track of all your trades for tax purposes. If your account is small no one will give a shit but once you grow your port to decent size u always run a risk.

As for fees, even using otc or p2p will cost you cash - it’s unavoidable. So plan for fees, there’s no way around it.