When you are starting out OH and averaging 50+, then the first thing that you want to be able to do is turn the cube. This is something that just takes a lot of practice. Your fingers will have to get used to it, and it's as simple as that. Lookahead and efficiency are there own things, but you can get really fast with crap solutions as long as you can turn fast. The best thing to do right now is just to endure being slow and do a 100 solves.
These are the videos that I used when I started learning OH.
(starts at 3:47)
They're a quite old at this point, so if you search "how to solve the rubik's cube OH" then you'll get a bunch of recent videos by Jperm, Brody, and CubeSkillz all on OH turning. I haven't watched any of them, but they're probably sufficient.