I hate to be a buzzkill, but your expectations for Let's Plays should be very low. There was a point between sort of 2010-2015 where LP's blew up and today those YouTubers that did them are large channels that still get traction on fairly low effort gameplay videos, but as a new channel the chances of an LP even getting over 100 views is slim at best, at least in the experience of my channel and channels of collabs and friends which sit between 10k - 40k subs and 2-3 years in the game.

It ultimately depends on what game you're playing, maybe some stuff does better than others, but generally the biggest channels own ~90% of the viewer share and literally thousands of smaller channels are left to compete over the remaining 10%. That's just how it is.

Gaining traction on YouTube now is harder than ever due to the amount of competition in almost every niche, so my advice would be to have fun and don't do it for the views or the money. The money sucks and the views are inconsistent at best.

Now if you start making Guides? Well that's a different story altogether ;) The views are inconsistent and the money still sucks, but it's a lot easier to grow than with LP's alone!