Your writing is never worthless, keep going. Everyone who puts their heart into their words has a surprisingly similar experience. You look back on work lost to the endless sweeping sands of time (in this case, five minutes ago) and absolutely hate every. Damn. Syllable. It really sucks. Sometimes you'll feel like you should listen to the monster in the back of your head telling you to burn your laptop (No? Just me?). In times like that, it's just super important to remember that success is never a straight line. Those words are a part of your story (in both senses) and you identifying that room for improvement is seeing a window to a future full of flourishing. As cringe as it sounds, your mind (and the world) is a beautiful mess. It's our job as writers to show this. Keep writing and don't worry, It makes sense that your literature would be too.