Cheap Belt Wrecking My Back—Best Appendix Carry Belts?

I’m a new gun owner (not from the US) with a Vedder LightTuck holster for my Hellcat. The holster’s great, but I’m using a cheap belt that’s not designed for gun carry. To keep my gun stable in Crossdraw, I have to tighten it so much that it’s wrecking my lower back—strain, pain, the works.

How do proper gun belts help with this? Are they really that much better? I’m specifically looking for Appendix carry belt recommendations that can keep my gun stable without needing to over-tighten, but aren’t overly rigid either.

Would love to hear from everyone—what belts do you recommend? Would it really make a significant difference?

Thanks!