'I want to know some places that are peaceful and relaxing for locals.' And just do you know, 'wanna' is great in spoken English, but not very common in writing except in very casual texts with friends.

I wanna know the kind of local places that are sometimes peaceful and relaxing..

Don't write "wanna" it doesn't look native. And it is not correct in standard written English. Remove it from your written vocabulary.

My dear you are not correct but I guess you tried well.