Static IP not working raspberryPi4

I am currently working on making a static IP on my raspberryPi (rPi) and using the FRC docs as reference for my IP address. On the rPi my method of changing the static ip is throuhg: sudo nano /etc/dhcpd.conf. I’ve tried many times, but it doesn’t work. I save the edits and then use sudo reboot to restart the rPi and then use ifconfig but it always shows the default ip address and not the one i set.

See this thread, in particular the responses regarding using nmcli. Older versions of the Raspberry Pi OS used /etc/dhcpd.conf, but the latest version uses Network Manager.