I post to twitter when I post a video and supply a link to the video. Takes a few extra seconds and gets it out there more to the masses. I also post every now and then to Instagram. My feeling is the more it's out there and seen the more might come and watch. Plus all in its maybe a few minutes more of work. Currently working on a Facebook page where the videos link back to Youtube. Curious why you don't like social media or don't trust them. You said you don't know how to use them, to be blunt learn lol. You learned Youtube and have almost 400 subs. The more you get your channel out there, like most things, it will grow. Imagine if your 400 subs, followed you on Twitter and shared your post about your new video with their friends, that's a HUGE amount more eyes that just heard about you then those 400 subs. Good Luck and keep moving forward!!