netwrok between my pc and the VM

In general, there is no relationship between IP of your PC and IP of your VM if there is no overlapping. You may need state what you are going to achieve here using EC2 which we can provide more applicable comments.

To start, you can check VPC and subnet stuff via official guide. https://docs.aws.amazon.com/vpc/latest/userguide/what-is-amazon-vpc.html

Anonymity is just a perception, if you mean to ask about whether you can be identified or not, the answer is that your Public IP address can always be traced back. This is how your connection will be established with EC2 from PC:

Using IPv4:

PC (Your Public IPv4) <--> AWS Internet Gateway (Public IPv4) <--> EC2 (Private IPv4)

Using IPv6:

PC (Your IPv6) <--> AWS Internet Gateway (IPv6 of EC2) <--> EC2 (IPv6)

For IPv4, your EC2 Private IP has a one-to-one relation with IGw Public IPv4, whereas in IPv6 you always have a Public IPv6 in AWS.

Some running IP packet capture can always trace you back (man in the middle).

first thanks for answer, and as i understand from you that VM dont solve this issue from tracking the pc that i create from aws (ec2) i am right ?

i dont see there is iPV6 in my EC2

If you only need to access the internet from your vm, you can set up NAT only, no need set up internet gateway which is serving the traffic initialized from internet . Your traffic will use NAT IP to surf the internet.

how i can do that, can you share anything about that? and this way will be totally separate from my pc? thanks

i got flag from a provider (website) and i do not want to have any fingerprints. thanks