Realtek RTL8811CU Wifi Dongle
It works with mercusys ac650, but only in 2GHhz. It was a lot of work, so I'm so grateful for the help.
Do you know some way that can work with wifi 5GHz?, but either way I'm so grateful.
For those who have the same device that I have https://www.mercusys.com/en/product/details/mu6h the 3rd option works.
sudo apt install build-essential -y
mkdir -p ~/build
cd ~/build
sudo apt install git
git clone https://github.com/brektrou/rtl8821CU.git
cd rtl8821CU
make
sudo make install