I think I’d go along the lines of Rick at the beginning.
I would start off with the best intentions taking everyone I can in and surviving and thriving as a group.
Probably end up raiding as many stores as possible. For food, guns, melee weapons, tools, supplies like wood, clothing repair, first aid, some sort of science type place where we can get equipment for making medicines and a bullet making machine.
I would ideally find a place with many exits and a lot of surrounding area so we can see into the distance for oncoming hostiles and set up defensive things like baracades, spike traps and stuff like that.
I’m thinking some sort of castle that is still in good condition that we can repair (we are in middle of Europe by the way, hence why there are castles) so I think would already have some good defenses to it. We would have mostly anti zombie defenses and stick to only secret traps that humans would fall for like fake entrances etc.
I would send groups out with customized vehicles that are bulletproof and zombie proof. Be that will blades, spikes or whatever. All powered by the best engines etc you can get so be able to mow zombies down.
Then as the world changed we would too. I would probably end up at the end being the type to force kids to become warriors of survival and maybe even get rid of the sick or elderly if they become a burden.
It’s f***ed but I can imagine I’d get to that sort of f***ed it point if I was led to it in a fight for survival world like that.
In the end only the fittest will survive.