Comfort is absolutely a secondary concern. Important, but not primary. Fast access to the securely holstered concealed hand gun is primary. All carry of a gun is going to involve some degree of discomfort.

If you don’t have a good belt and holster, you’re wasting your time trying to discover what will work for you.

Cheap/incorrect equipment = undesirable results.

Try AIWB. Plenty of info online.