How do I write this in Japanese?

I'm not a native Japanese speaker so there are probably better ways or more natural ways of phrasing it, but I've come up with:

でも、日本に住んでいません。

日本語の読むのが上手になるためにソーシャルメディアだけ使います。

Demo, nihon ni sundeimasen.

Nihongo no yomu no ga jouzu ni naru tame ni sousharu media dake tsukaimasu.

A breakdown for you:

でも = but

日本に = in Japan

住んでいません = do not live

日本語の読むのが= Japanese reading (literally "reading of Japanese") - the 'no ga' nominalizes the verb, making it a verb phrase and meaning I can use it in a sentence with another verb.

上手になる = to become skillful/good at something (to become 'naru' needs to be in the basic form to use with 'tame ni')

ために = in order to do something

ソーシャルメディア = social media

だけ = only

使います = using

Google translate