Whole home vpn router

Hi everyone. Currently using a series of Deco M5s to extend coverage throughout our home. Looking to upgrade to something I can add a vpn to that a ding dong can install. (Meaning plug and play or close) we have a basic WiFi arris modem from our isp and the coverage is trash. I’m hardwired into it for work on one end of the house and my children on the other end like to game. Any advice is appreciated!