I can practice my English and my Japanese a lot and meet abroad foreign people here!

This sentence is too long and too intertwining. My professor in my writing class told me that we should write one idea per sentence so that the readers won't be confused on what you're trying to say. In my city, I have just a one person who I can really practice English with. He's my teacher conversation, he's from San Diego, California. and He's not just my teacher, he's also a friend of mine. Also, don't forget to use capital letters for proper nouns like English and San Diego, California

When we go for a ride, we speak in English.

at everywhere we go, i'ts cool. --> I don't exactly know what you're trying to say here. Are you saying that "we go to cool places?"

I want to meet more abroad foreign people (or you can simply say foreigners), mainly those who know or speak English and Japanese to help or people who are learning Portuguese for i help then. so that I could help them as well.