Both are good bro. You don't have to pick one or the other. Also, do online. you really have to cast a bigger net

Move to another town. I used to live in a small town too and it makes everything more awkward but I still recommend you to approach all the hot girls in town before you move.
I regret not approaching more when I was there since it was a missed opportunity.

If you have to stay in your town mix cold approaching with social circle game. The worst thing about small towns is that most girls already have boyfriends so that makes everything more difficult.