Regrettably, every home theater system component you purchase (TV, DVD player, receiver, etc.) has to be controlled. Thus, you get a remote control with it. Thus, for a typical home theater setup, you’ll accumulate 4-5 remote controls. Too many.
All-in-one universal remote controls are very valuable commodities. Many are able to manage your entire home theater system. Most take some training and getting used to. Some control systems can be hard wired into your home to also control lighting and other functions.
There are too many models available to suggest a specific type or brand. I suggest you research what is available and find any reviews online that you can. For some odd reason human beings are very passionate about the remote control and they’re not shy in telling everyone what their favourite is.