Googling "how to give a Macbook Pro a static IP address" found:

To give a Macbook Pro a static IP address, go to System Settings  >  Network,
select your connection (Wi-Fi or Ethernet), click Details, and then go to the
TCP/IP tab.  Change "Configure IPv4" from "Using DHCP" to Manually, and enter
the  IP  address,  subnet  mask,  and router address provided by your network
administrator.

That uses an insane URL. There's a longer explanation at:
   https://support.apple.com/guide/mac-help/use-dhcp-or-a-manual-ip-address-on-mac-mchlp2718/mac

On your Mac, choose Apple menu > System Settings, then click Network  in  the
sidebar.  (You may need to scroll down.)

Click the network connection you want to use, then click Details.

Click TCP/IP.

Click the Configure IPv4 pop-up menu, then choose an option:

If your address is assigned automatically, choose Using DHCP.

If your ISP or administrator gave you an IP address,  choose  Manually,  then
enter  the  address in the IP address field.  If your ISP gave you additional
information such as the subnet mask and router, enter  those  values  in  the
labeled fields.

If you received a DNS server address, click DNS, click the Add button at  the
bottom of the list of DNS servers, then enter the address.