Looking at the description of the question, I guess it is a network problem.
Reach out and answer:
Set up as a bridged network as shown in the picture. Then set the virtual machine IP. If your network has DHCP, then please wait to obtain the address subscription.
Subsequently, the virtual machine is connected to the network where the host machine is located. Next, use Fiddler as usual.
Looking at the description of the question, I guess it is a network problem.
Reach out and answer:
Set up as a bridged network as shown in the picture. Then set the virtual machine IP. If your network has DHCP, then please wait to obtain the address subscription.
Subsequently, the virtual machine is connected to the network where the host machine is located. Next, use Fiddler as usual.