Question about private network IP address in a vagrantfile

[Sorcerer Stone]

My host network is Win10 pro with HyperV disabled. I am trying to run docker projects using vagrant. Have a question about networking in docker but it sort of involving docker and vagrant. Hope someone may help.

In my vagrantfile, I created a private network with an ip:

config.vm.network "private_network", ip:"192.168.33.10"

I also instructed the vagrantfile to install ubuntu. Once the ubuntu is installed, I created a network for the particular open source project I want to run.

For example: docker network create mybridgenetwork

When I inspect this network, I found something perplexing. There is a segment in the config file that said this:

...
        "IPAM": {
            "Driver": "default",
            "Options": {},
            "Config": [
                {
                    "Subnet": "172.18.0.0/16",
                    "Gateway": "172.18.0.1"
                }
            ]
        },
...

On my windows host, I tried to ping 172.18.0.0 or 172.18.0.1, I got no response.
When I pinged the private network specified in the vagrantfile, I got reply.

So, when I try to run a yml compose file using vagrant, I should use the private IP stated in the vagrantfile (192,168.33.10) and not the gateway's address 172.18.0.1

Am I correct?

What is the relationship between 172.18.0.1 (the IP of the docker network gateway) and 192,168.33.10 (the private network IP stated in my vagrantfile)?

Thanks in advance.