If you want someone to practice with you, don't just say "hola

". Here are some ways to start the conversation.

Are you looking for practice partners?

I would like to practice...

...listening to English.
...my pronunciation.
...for a job interview.
...with voice messages.
...using text.

Can you help with...?
Will you help with...?

I didn't understand.

Could you understand what I just said?

Please repeat...

I can repeat...

...more slowly.