There are some online services where you can find a language exchange partner (to help practice each other's native languages). This is useful if you don't want

There are some online services where you can find a language exchange partner (to help practice each other's native languages). This is useful if you don't want to pay for professional classes. You can meet periodically by video chat and help each other practice. Practice or study with native speakers is valuable because native speakers have a "native speaker intuition" to quickly and confidently resolve uncertainties about how to say things. On the other hand, if people haven't studied linguistics or language teaching, they might not be able to explain why they say things a certain way (because we all know and use rules in our native languages that we've never thought about consciously and never tried to explain). So you shouldn't assume that native speakers will always be able to give you helpful explanations of why they chose one way of saying something over another.