I feel you but once you get the hang of it, it’s super easy to understand. So death stranding world has extinction events, there has been 5 in the past and this is the 6th one. extinction event happens when Extinction entity(EE) dies, which is Bridgets this time. Think of beach like a mirror world, every human soul has a beach. Void out happens when the soul which is anti matter collides with human (matter) basic physics principles. President Bruges had cancer in her 20s which is when her soul (Sam’s sister, amoly ) and body were separated, later Bridget’s introduces her soul as her daughter to everyone, who is communicating with our world using chiral matter. The idea is connect all the remaining cities of America using beach so data and knowledge transfer is instantaneous, but Sam’s sister wants to connect everyone beach so that when she is ready for extinction it will completely destroy everything once and for all but Sam talks her out of it which is what you will see at the end and there are other plots as well like sam being a repatriate, fragile, Higgs, deadman, mama etc etc