If I can give you a piece of advice in regards to Steem, this kind of comment comes across as spammy.
I'd give the advice to not just read people's posts, or in this case, watch their video. Instead, leave a great comment making it obvious that you watched the video and show a real interest in what others are doing. If you engage with people like this, you'll make some friends on Steem, gain followers, and the votes will come. I think you'll also enjoy your time more that you spend on Steem/it.