I assume that you need to configure the transmission of packets via the `QUIC` protocol, with the help of which HTTP/3 communicates I cannot provide you with an exact step-by-step answer of what exactly you need to do for such communication
but I would like to direct you based on my knowledge
the first point I would like to discuss is that Laravel is essentially a tool for php with a set of methods and methods for working with these methods.

My assumption is based on the fact that you need to use the http3 Nginx documentation

After setting up the web server, you need to see what protocol the browser uses to exchange information:
1. open browser console
2. go to network tab
3. refresh page
4. look at your version HTTP

P.s: I am not a network professional, and if there are more educated people here in how the protocol interaction version with the framework works, then please make adjustments
goodluck)