Weird Interaction with A Certain Adapter

[horugane]

I have a certain no-name AC1200 wifi adapter bought from AliExpress a while ago. It has a driver to install once plugged in when installing on Windows, and within several Linux distros like Debian, Mint, etc., the installation of rtl88x2bu from other authors work flawlessly. However with Arch, the driver rtl88x2bu (my model is rtl8832bu) will not appear. I did blacklist rtw88x2bu when it showed up like the guide said and reinstall the driver, but it did not show up in 'lsmod'. Other wifi adapter works well; I assume it was using rtw88x2bu since the moment I blacklisted the driver, I couldn't use it anymore and had to remove the restriction. Attached below is my 'lsusb':

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 002: ID 0b05:19af ASUSTek Computer, Inc. AURA LED Controller
Bus 001 Device 003: ID 174c:2074 ASMedia Technology Inc. ASM1074 High-Speed hub
Bus 001 Device 004: ID 05ac:2405 Apple, Inc. Gamepad 2.16
Bus 001 Device 005: ID 258a:1006 SINO WEALTH USB KEYBOARD
Bus 001 Device 006: ID 046d:c53f Logitech, Inc. USB Receiver
Bus 001 Device 007: ID 0951:170f Kingston Technology HyperX SoloCast
Bus 001 Device 008: ID 0bda:b812 Realtek Semiconductor Corp. RTL88x2bu [AC1200 Techkey]
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 002 Device 002: ID 174c:3074 ASMedia Technology Inc. ASM1074 SuperSpeed hub

I'm a new Linux user, so I might stumble somewhere, but this problem has bugged me for over 2 days, still couldn't figure it out.

[RinCat]

Hi, try run sudo modprobe 88x2bu then sudo dmesg, and see what happened.

[horugane]

Hello! After looking around, I found out that I haven't installed linux-headers so the dkms install didn't work, but after I downloaded the packages it worked. But I got this issue ever since I started using Linux is that my download speed never exceeds 2MB/s at all. My internet speed is 300Mbps, and my download speed on Steam in Windows on average is 15-25MB/s. Do you know what caused the issue and what the potential solution it might be?