Okay sure, for a specific use case yes you can point a record to a private IP, however this explicitly doesn’t expose your homelab to the web. I misunderstood OPs intention.

You can’t point to 192.168.X.X that’s your local network IP address. You need to point to your public IP address which you can find by just searching ‘what is my IP’. Note that you can’t be behind CGNAT for this, and either need a static IP or dynamic DNS configuration. Be aware of the risks involved exposing your home server to the internet in this manner.