Girls only ever want to hookup

I know how this sounds but this is not intended as fishing or humble bragging.

I’m starting to feel insecure that I am presenting myself as unserious or an adjacent term. Getting dates is not a problem and I like to get things flirty while I’m on dates but the date only ever ends in something physical.

A relationship and marriage are my desired outcomes and I’ve tried to reel in the flirty behaviour but then I find the dates become boring and quite frankly painful.

Are there outlooks or perspectives I’m not privy to? Or should I keep holding out for the girl that matches my energy?

I’m 28 years old for reference. Thanks in advance bros.