Custom Craftings Issue

I'm making a datapack for my server with friends and I wanted to make the diamond and netherite stuff harder to craft, so i started making custom recipes. I figured out how to replace vanilla craftings and how to make my own replacing them, but here comes the issue. Some of my recipes work and some don't and I have no idea why this is happening. The diamond_shovel works in-game no problem, but the pickaxe doesn't work (it isn't because of the abc diamond_blocks, Even if it was all one letter it still doesn't work) The thing is diamond_sword and diamond_boots work just fine, so I'm not sure but it's maybe of the letters in pattern touching? because it also doesnt work with axe or hoe when I tried Version 1.21