Mouse and keyboard not working in Big Sur

First of all apologies for posting this twice. I couldn't get much help last time and I feel I didn't word it right.

I'm trying to install Big Sur 11.2 on my Dell laptop. I have double and triple checked that I have all the right kexts, SSDTs and config according to the guide. But I just can't get my mouse, trackpad or keyboard to work. It boots to the recovery screen as it should, but I can't proceed because of this.
My wired mouse does light up when I turn on the laptop but it turns off during the macOS boot process and doesn't come back on. Works just fine in Windows and Linux so I don't think it's a mouse issue. I have tried using both USB 3 and USB 2 ports.

Hardware-
Laptop: Dell G3 3500
CPU: Intel i5-10300H
GPU: Intel UHD 630 (dedicated Nvidia GPU is disabled using -wegnoegpu in boot args)
Ethernet: Realtek Gigabit
Wifi: Intel Wireless-AC 9462

config file : https://pastebin.com/hjzppF9Y

I'd really appreciate any help

submitted by /u/ApprehensiveUnion797
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