Some websites not working on my old android phone, why?

hi, sometimes I navigate on sites but some websites not working, but on my laptop works fine, The last time I tried to download apk from apkpure.com the page didn’t load at the same time I opened null48.net “null48 app store too” it work well. that page game on apkpure site works fine on my laptop, the android I have is version 7, so maybe that is the problem, I am asking for help? that was example but I face that problem some times, thx.