@craftzars has some really great advice. If they will allow me I will add one more.
3. make sure to put all your focus on creating good content first and foremost.
It's ok to want to grow a channel but take your time and work on the content first. Most channels won't see a lot of growth and momentum in the first few months with few videos. Most pro YouTubers will suggest for you to work on your first 100 videos before worrying about stats and growth. this will help you sharpen your YT skills, improve your videos, perfects your SEO and allow YT to have enough data to let the algorithm start noticing your videos and potentially sharing them to more potential viewers.
Good luck.