First build almost working!

Hello everyone, this is my first hackintosh I made for a buddy. Specs: i5 6400 16gb 2400mhz Gigabyte h110-d3a Samsung 128gb ssd and 1tb hdd Msi rx550 2gb Catalina 10.15

I used a guide from YouTube based on one from hackintoshzone. https://youtu.be/mHLgE3wooW4

Everything works, audio, wifi, and all that, but the rx 550 isn't detected, it just says, "display 7mb" next to graphics, even with internal graphics disabled.

So I go to update to the latest version and I downloaded it but when I click restart to install, it just reboots with the same old version of mac and the new version not installed.

Tried booting into recovery and enabling SIP, as I heard this may help but I cannot even type in the terminal in the recovery mode in order to enable it.

Any advice? Thx in advance