Lose Streak is a moment when you continously lose every battle and tend to go to a lower rank. That is why, being on Lose Streak(LS) creates a mental block to every player forcing us to continue playing until we are satisfied.
This is a problem because we couldn't properly put up on a fight and we can't properly outsmart every opponents. Therefore, this creates a worse lose streak degrading our rank.
A solution that I could provide is after losing 2-5 matches, we need to rest and take up our time for thinking a proper strategy to overcome the lose streak and climb up the ranks. Also, we could try using the practice match to help us identify deck builds that we could use in our matches.