This is not realism. This is a game. It's meant to be fun. And getting asskicked with absolutely no chance to win or at least escape is not fun.
Fallout and Fallout 2 were a lot of fun in my opinion. Heck, I
still play them. Sure, they're tough at times, especially at the beginning, but then that's what 1) saved games are for and 2) running away is for. Random encounters especially are usually pretty easy to run away from. Sometimes discretion is the better part of valor.
Sure, it'd be realistic to set traps that are hard to see, but this is a game. This is a developer failure for making an impossible-to-detect trap, not a player failure to note a pattern anomaly indicating a trap (since there was none).
I can't recall a single "impossible-to-detect trap" in either Fallout. The traps are always detectable. There's even a skill for dealing specifically with traps. If you can't detect the traps, perhaps it is because your character's perception is a tad too low? That or you didn't realize the raised plates that appear when you detect them are the traps?
Would that not piss you off and make you reconsider the wisdom of buying this game?
Considering that I still play Fallout and Fallout 2...
Here's some general advice:
1 ) On your first time through, don't screw any of your SPECIAL attributes. Don't put a single one below 5, but
especially don't screw with Intelligence.
2 ) Steal. Every chance you get, save and then try to sift through people's chests, shelves, etc.
3 ) Steal even more. Steal steal steal. Ammo is
everywhere, you just have to pick pockets to get it. And you always need more stimpacks. A good 30% in the Steal skill is mostly all you need, if you don't mind saving before any attempts and loading if you fail. Not only can you get an awful lot of ammo this way, and get some guns before you can even buy them in shops, but you can also sell lots of loot for other things you need.
4 ) Books are your best friends. Small Guns, First Aid, Science, Repair, and Outdoorsman are all skills increased by reading books.
5 ) Whatever you do, never ever
ever take the Fast Shot trait on your first time through the game. Aimed shots make the world go round. You can do far more damage
and get additional effects using aimed shots.
6 ) If you hate random encounters then raise your Outdoorsman skill.
7 ) It almost shouldn't need to be said, but your first time through, really start yourself off oriented to using the Small Guns skill for combat. Combat in the game pretty much centers around this skill. Go with the flow. Each level always dump some points into it, even after it reaches 100% since range, darkness, and aimed shots all take away from your chance to hit.
8 ) Armor matters. Upgrade your armor whenever you can.