its a know issue the 4/10 results... most of the time it's because of backlinks too spammy or created too fast.
I just see your sitemap.php and it's looks ok for me if google have the good adress.
You need to see at GSC if you have any message at "Security and manual actions"
see also the...
seems like your domain have penalties :( your backlink profile and content is ok?
for speed, i see you have 451 kb of fonts, you need to use that: https://xenforo.com/community/resources/font-awesome-manager.8407/
Ohh okay. Thank you for your response. So its worths i let it running? Actually i have 100 mobile and pc on pagespeed whitout amp, but much less when i test a thread without amp too.
Its true, i Can see much more speed with amp for threads