don't buy subs? can u please explain this in more details? subs not work for channel ranking or video in youtube trend.Guy use some SEO tricks such the triple keyword trick. Put the same keyword in your title, description & tags. It will help your video rank higher. If you are buying views, don't forget to buy likes and comments. It increase your ER (engagement rate) and makes your vids rank higher. If you want more subs, then ask for them. That is usually the best way based on my experience, don't buy subs. Just buy views and ask for subs (likes too)
Hope this helped. If you have any other questions, feel free to PM me.