Want to cross the line? Ignore the line. Seriously, don't even check your rating... your rank progress, just play.
Learnt this from playing Fifa competitively online years ago- it was fucking amazing how many late goals I'd concede if I was 1 - 0 or 2 - 1 ...I'd check the clock ...5 minutes to go...and bam...panic, nerves, tilt..call it what you like.
Human psychology when it sees the finish line is weird, and you won't be aware of your drop in performance because your focus was wandering. You won't acknowledge the choke - you are more likely to blame bad luck or the game being 'fixed' as you imply here. It's not, it's all you. Don't think about the finish line.