HTTP/2 matters on bloated websites with tons of external resources, it is not the case here. HTTP/2 will not get you the first HTML page faster and this is the only thing needed here to start showing you something.
In terms of round trips, HTTP/1.1 without TLS will do one less than HTTP/2 with TLS, and as much as HTTP/3 with TLS.
In terms of round trips, HTTP/1.1 without TLS will do one less than HTTP/2 with TLS, and as much as HTTP/3 with TLS.