Help needed! HP Elitebook 850 g3 OPENCORE - No battery percentage, no brightness control

Hey, i finished installing Big Sur to my elitebook and everything else seems to work except battery indicator/percentage and brighness controll.

I used prebuilt EFI because i couldnt get my own working, so this prebuilt efi folder does not contain dsdt and even tho i tried to add my own dsdt to it by dumping one with linux usb and ofc making the change to plist it just wouldnt boot then.

So my guestion is that can i get ssdt to make my battery and brightness work or how do i create dsdt that works with this laptop so it would fix these issues.

Some screenshots in spoilers.

https://preview.redd.it/kfugnidzxe381.png?width=1440&format=png&auto=webp&s=5d6872b1368bcede372fead6ed5f079122f01b06

https://preview.redd.it/4j5n6mdzxe381.png?width=1440&format=png&auto=webp&s=168d140e91a89b9d62d645042d07a17cea9eaa5a

https://preview.redd.it/oqpgbkdzxe381.png?width=1440&format=png&auto=webp&s=f61e8a800b1bcd8918d02411aba6512a47821ea8

submitted by /u/Tomi_M_
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