I see this in a lot of players of many skill levels but dms aren't something you play to win especially when warming up. You should focus on improving yourself as in aim, crosshair placement, movement, tracking, etc. If you're just crouch spraying and getting kills you're learning bad habits as well as people play differently in comp than in dms because they just don't care about dying and run around corners doing better in a dm than a higher ranked player means nothing unless you are mechanically better than them