Call of Duty is Somewhat Boring

You know Call of Duty is Somewhat Boring without Friends.

Like I can't play Warzone by Myself and all I can really do in MP is Camo Grind and Go for Nuke which I still haven't done yet (Best is a 21 Killstreak on Embassy). I would like to play ranked but I always play against Hackers or Crounus' It Really Sucks.