So I wandered through Lexington and hoped to find any npc I can talk to so I can 'drift into the game' and all I found yet were ruins with raider in it which rather reminded me on a gun range. Is there actually any Lore in this town ?

Secondly...

I found a Fatman and 2 Nukes... which .. didnt feel special to get because it wasnt challenging at all. This weapon is supposed to be locked behind a master lock or buried somewhere in the deep, but not dropped by a raider /:

I generally feel Im getting too much stuff everywhere and I didnt choose the perk for that. The importance to search in every locker, box, door just doesnt come up. Difficulty is set to hard and the incoming damage is satisfying to me but thats it.