Hello, I play on version 1.20.1 of factories, installed the mod version 1.2. It was written that it can work on both 1.19 and 1.20.1, but after checking it, nothing worked. I was playing solo and shooting from an ordinary bow with ordinary arrows. If you know how to fix it, then write to me, okay?

What is "factories"? Is this some modpack?
If so, I need to know which one specifically. Can you send me a link to the CurseForge page?

Other than that, are you sure you are using the Fabric mod loader, not Forge? Because this mod only works with Fabric.

edit:
Also, what exactly do you mean by "nothing worked"? Like, how did you test the mod?
I'm not sure if you maybe just misunderstood what the mod does.

I meant fabric, I use a translator and made a mistake. I tested the mod like this: I aimed for a black spot near a birch tree, because I was in a birch grove. Aimed the bow at the spot, the cursor was exactly on it, shot from a length of about 10 blocks. But I didn't hit a black spot, but as without the mod, my arrow dropped a little.

Ah, you're misunderstanding what the mod does.
This mod does not make arrows go straight.
It removes the variance between multiple shots.

So if you shoot multiple arrows from the same place and angle, it will land at the exact same spot.

Here, let me demonstrate:

All 5 arrows landed on the exact same spot. In Vanilla, they would be all over the place.

Aah, that's it. Okay, thanks for explaining