How can i reinstall MacOS keeping the EFI folder?

Hello, recently my hackintosh, that was working fine for like 2 month, starts to randomly reboots. Because that was my first contact with Mac i probably installed some things wrong and, maybe, that is the cause of the reboots. So i want to just reinstall a clean Mac, removing all files and apps, but keep the EFI folder and any other opencore files. How can i do that?

I took a look on recovery option on boot an, when i enter the disk partiiton tool, i saw one partition like MacOS and another MacOS - Data. Both have the same total size but the MacOS - Data has a lot more used space. What i need to do with those partitions to make what i want?

Ty. <3

submitted by /u/Gubimiyazaki23
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