yes, apache2 is working, but not recommended. nginx is better.

but if i run nginx revers proxy with apache + varnish and http2 is that working?

i did install http2 and my TTFB was go down to half compare with only apache + nginx revers proxy with varnish. ((my free lets encrypt ssl was the one that was slow down a little but with http2 it was speed up alot))

happy for all help i can get, i not a server expert totally amatuer but i now try learn setup a google cloud server on my own and make it secure and fast

i know http2 have not same secure as https have but i pick speed before security that why i was get interested in http2

Google cloud server have amazing TTFB speed compare to my old siteground host that i use now. maybe 5 times better speed with google cloud :)) I wish i did this earlier setup a cloud server on my own i just study little bit on internet and maybe get some help on this forum from you server experts 

Until http2 has some real strong benefits i doubt if it will be a big deal enough for people to switch to it, thus causing the market to go that way.  It has some speed and some SSL benefits but other than that its just not enough of a big deal to go with at the moment.