2 IP addresses into 1 IP address

Hello, I use a load balance broadband router in order to double or triple the speed of my internet connection, as it allows multiple WAN entries, which are then used all together into one much faster speed, double or triple speed.

The problem is that some sites detect 2 or 3 different simultaneous external IP addresses requesting packets, which issues security flags. Not good.

I want to avoid this by only having 1 external ip address, but with the combined speed of multiple wan connections.

I would like a script or program for windows 10 that allows this.

I know I can get 1 external ip address by connecting to an external proxy with the right protocol. I am not interested in such a solution, as I already know how to do it.

I want to do everything in-house. In other words, from my computer.

An idea would be connecting my desktop to a server-side proxy ON MY COMPUTER, which combines the ip addresses for example. And then connects to whichever external site I want.

The external site would only see one ip address, obviously.

Thanks.