How do you keep playing after losing non-stop?

So basically the story is, I'm trying everything I can do to try and get better, I look up guides and info videos on YouTube from T90 and Spirt of the Law, I have custom scenario maps to help with build orders, and I always try and build counter units and not single unit army.

But after all this, I have dropped too 850 on ranked after 100 hours of gameplay. I'm just about ready to delete the game for good since I'm not progressing with it at all.

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I don't know what else to do...