"It can be installed on any Android phone" Ahsan Shanto man
this misleading is compleatly disappointing as installing grapheneOS
on other hardware is hard/very hard even for very technical people,
you would need to not only compile it for your target(device) and
do a lot of work/reverse engineering to make  things work plus
without proper hardware like titan chip installing grapheneOS is kind of
pointless notebookcheck has great quality reviews that's why Im disappointed
in your complete lack of understanding, posts like those lose credibility for
this great site, fact check and do better, also that recommendation is for
pixels from 7a onward not for other phones, peace

"Broad device support would imply mainly supporting very badly
secured devices unable to support our features"
grapheneos.org/faq#future-devices (last paragraph)