Severe Rank issue

I generally would not post things like this, but this has now happened twice and I am severely frustrated.

In both SWAT and team slayer I have ranked as Platinum 1. Both playlists, I play about 5-10 matches after being ranked and randomly (both on positive kd wins) have been ranked down from platinum 1 to gold 1.

Being ranked down isn’t the biggest concern, the concern is that it is happening after our team wins and I hold the lead position in the match

Details:

-I have generally held a positive win record on both playlists

-both issues happened after match wins with myself holding the lead position on the team and a positive kd.

Please help…