Hey, I checked your YouTube channel, you need to make a lot of changes if you are serious about youtube.
(1) Your thumbnails are p bad, use Picmaker.com for thumbnails if you have almost 0 experience in thumbnail making, however use Photoshop, if you know how it works.
(2) You need to adjust your screen resolution, check mine, or Pokeaim, or Blunderr, or Emvee and adjust you Obs resolution accordingly.