Logs: https://pastebin.com/E5GaBNys

PC Configuration:
CPU: Ryzen 5 3400G
iGPU: Radeon Vega 11
OS: Fedora Linux 40

Choose the correct version and it will work. We don't have a "one file works for all".

but what about 1.21 not working too

0.4.3 does not support Minecraft 1.20.6

strange thing, haven't seen 0.4.3 for other versions, but now i see that versions are strangely listed on the modrinth

The log says what's going on:
- Mod 'VulkanMod' (vulkanmod) 0.4.3 requires version 1.20.3 or version 1.20.4 of 'Minecraft' (minecraft), but only the wrong version is present: 1.20.6!
It's intended behavior.

according to the changelogs it should have support up to 1.21, but both 1.21 and 1.20.6 won't work with it

Did you downloaded the correct one on https://modrinth.com/mod/vulkanmod/versions ?

yes

But there is no 1.20.6 version for 0.4.3. Only a 1.21 version, which is another file.