https://www.gamersdecide.com/articles/games-like-fallout-new-vegas

It tells us the list of games that could help satisfy our hunger for another Fallout New Vegas experience. Of course, you do not want it completely emulating the game because New Vegas will be a classic and will be remembered for generations to come. Games on this list give off the typical "post-apocalyptic" vibe of either a messed-up environment or a corrupt government. They could very well be connected. So if you are willing to free up some hard disk space for the games on this list, go for it. You will not be disappointed. Otherwise, feel free to watch any gameplay videos to entertain yourself.

Also, please give some  suggestions on your own. I know that you might have some disagreements with this list.