I actually found an article I read yesterday quite interesting. While gaining subs is definitely good the author also states that it's not what you should focus on too much. It's more like subs go up when you do the right content but subs don't automatically give you more views (i.e. there are bigger drivers for views). It's more the icing on the cake for your good work you do elsewhere.
You should find it when searching for "Why YouTube Subscribers Don’t Matter" (yeah, it's obviously a dramatic article headline to draw in more readers
)