Unable to rank up even when I win all matches

I make sure to win or tie the matches so I can rank up quick and easier but the game always give me back the middle finger basically. Every 4 games and now sometimes 2 it loads the screen to 100% in H2H and then 2 sec later resource download erro,like why ? I have a snapdragon elite chip,512 gb storage and 16 gb ram and both are never above 50% full 400gb free and max 10gb used for ram and network is kinda shaky for other spots in my home but I always sit beside the router so I have no issues when in the match phase basically ever but at starting i always get resource download error and which just makes me lose stars without any reason