every game i get first place and my team loses.
The personal score system is heavily flawed, and any rankings shown are essentially meaningless.
Anyway, from reading through comments, it seems like you're just eager to blame others for your losses. Yes, matchmaking fails sometimes, but typically not that often.* You also seem to undervalue your teammates, since their damage numbers look pretty decent. It's a little hard to say anything for certain though, lacking more information (e.g. from an official match history or something).
*Side note: matchmaking has failed me in the past. That's not really typical though as
a) there weren't enough people around my MMR range back when I queued solo, so matchmaking struggled to fill games.
b) being in full premades during party IP events made proper matchmaking nigh-impossible when the premade likely has a ~800 MMR difference.