I found a girl that wants to learn sSpanish.

Hi, I found a girl that wants to learn Spanish. If there any, please send me a message.

Now that is it corrected for grammar, but actually want I think you ate trying to say is: Hi, I want to find a girl who wants to learn Spanish. If there are any, please send me a message.

Why only girls? Italki is not a dating site. It's a language exchange site. If you are looking to meet girls, you should try a dating site!

I found a girl that and she want to learn Spanish.

Hi, I found a girl that and she want to  learn Spanish. If anyone want to learn Spanish, please send me a message.