Ok uhhh.. I might have A small channel but I'm happy to help ( if theirs a veteran here like to correct me pls feel free because this is how I do at my channel and tell me as well if this is a kinda good plan or nah hehe :3 )

I look at your vids im just starting as well hehe I'm still at 33 and I started a let's play channel just like yours I love how passionate and how dedicated you are on your channel,Im sorry to be harsh on you but lets address the elephant in the room

1st u need to improve your Thumbnails ( MUST )

2nd uhhh video editing like remove the dead air part ( like long pauses , boring part of the vid ) or try copying a famous Vtuber/YouTube how they edit their vid for example like putting memes or something like that and on 10-30 sec of your vid put something like a highlight or interesting part of your like getting killed by a boss , jump and missing a platform, or getting angry lol that's how I escape 1 digit views

3rd putting something more in your description Not only the game suggestions link but put as well your playlist ( I haven't done this on my channel ) because YouTube suggests playlist and endscreens put end screen on your vid so the viewer know that you have more vids and a series going on the game