Follow\Unfollow method and some general question from newb

Whats the best method for for follow/unfollow? Manual or 3rd party tools? are they safe to use?

Account tied with other acoount on another devise using free vpn(i know its not good), should i stop this behaviour? Is that possible that OF account recive shadowban/restriction via second account using free vpn(awere of bad rated ip).

What the diffrence between running SFW and NSFW content? Does SFW pictures and gifs recives more interactions?

P.s. sorry for pretty common questions, searching forum doesnt give me what was im looking for, either its being from 2017-2021

My goal is to grow naturally, white hat method to bring quality subs to OF page. Im new to twitter, made some follows nsfw creators and its all looks spammy, everyone reposting each other, looks like im run into some few networks of mother\slave and its seems dozens of OF creators post nsfw and run nsfw twitter pages. Makes me really confuse, as i heard its better to post sfw pics.

Will you suggest me run sfw either nsfw contents on my twi? If i run sfw could i post nsfw content in replayes to bring attention?

following