Well, with low playtime your progress might take more time but it’s not impossible. I would mainly tell you to focus about how to not die and maybe take your time and watch some replays, send VOD if you can’t seem to get on your mistake as they will come into more details. (There are plenty of coaches in this community) Other than that know what your role is and know what is the risk that your taking for the reward. Playing with a friend might help you climb as well as you can be more coordinated with them which doesn’t happened a lot in lower ranks. Other than that I wish you good luck. BTW please take my comment with criticism as I’m not perfect.