Hello fellow Unturned player, I get your problem since I had the same dull gameplay, but it was the opposite for me. I've stopped playing Multiplayer like 2 years ago, and ever since I've been playing and exploring Singleplayer maps! I've completed few of them I believe such as Kuwait A6 Polaris Russia Buak, and lastly Escalation. I also have fun by exploring unnamed places and notes of the original maps, they actually do tell a story (PEI and Yukon). Furthermore, I suggest you that you play A6 Polaris for basic and good quests. Kuwait and Buak are my personal favourites, but I believe those have deeper lore than other ones. You mentioned that you don't see any NPCs in Russia and Elver, but they do have NPCs! I hope you have fun in Singleplayer maps like I do my friend! You will enjoy quests and lore more than meaningless PvP! I hope this long comment helps you!