YouTube channel marketing specialist

Hi, I've got a YouTube channel with over 10k subscribers, which need more growth. I need your ideas, how I can do this with cost effective methods. My channel is about cryptocurrencys, blockchain, mining and finance generally. My videos are in German language. The goal is to get a bigger growth and higher earnings, so I can pay you with my extra ---------- 's not wrong if , you are skilled in ads, free methods, graphic design (maybe for better thumbnails) and video cutting for better videos.