New to hackintosh

Hello, I have been trying to set up a hackintosh for the second day now, but I think I need help from some experts. Here is my configuration: CPU i3-4100M, HD Graphics 4600, and 16GB RAM. It is a Lifebook E754. I have watched a lot of tutorials on YouTube, but nothing worked as I expected. I am having extreme trouble with the EFI file. All my installations had 2 problems. The internal screen on the laptop didn't work; I had to open the settings on an external monitor and then change the resolution, and the screen suddenly worked. The second issue is that the whole system is extremely laggy because the graphics card is using very little memory. I have searched on forums, but I guess I am too dumb to understand it. Whenever I made drastic changes using OpenCore, I couldn't boot, and it said, "this version of macOS X is not supported because MAC - XXXXXXXXX" (some numbers, I don't know which ones). So, if someone could please advise and help me in a really simple way on how to fix this. (I have already looked at the EFI from other people with the same laptop on GitHub, but it doesn't work well).

submitted by /u/Professional_Act9494
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