Most Kills Stat is Incorrect

In Call of Duty Vanguard I have multiple games of me getting over 200 kills and took screenshots after every single match, later uploading them to my Xbox profile for all to see. However, when looking at my stats I see that it is in the lower end of the 100+. I was wondering if there was a process I could go through to show some sort of proof in order to ensure the correct numbers are shown.