Whenever youre playing a Jade you have to compartmentalize the match as training since its such a hard matchup for your character. You cant take those matches seriously because most ppl counterpick to Jade for easy, scrubby wins when they have no fundamentals. Like your mental problem with playing Jades is felt even by pro players on their streams because of this game's mechanics, which reward scrubby, turtling type of playstyles. You should know from now on that this game has glaring balance and design issues so that when you play Jades you wont get as tilted.
Its like when I lose to a random Terminator online or an Upgraded Jacqui, two characters that are literal complete BULLSHIT when it comes to their unreactable offensive options, I dont take those losses seriously because I accept that Jacqui and Term are fundamentally broken and not competitively fair. Your problem is your presuming that this is a balanced game where if you got beat its because you got outplayed, that is definetly NOT the case in any MK game my friend. This game has broken, unfair, degenerate bullshit in it that allows less skilled players to win with less effort, and Jade is a prime case of this in specific matchups. Its just a very hard matchup where you have to work way harder while the Jade can make mistakes and still win. You wouldnt be feeling this if you played with Johnny Cage or Liu.