My rules of thumb as a newbie for trapping.
1) You need x3~x4 of dungeon level to the trapping skills to safely handle all traps.
That means you are doing level 10s on elite be close to skill +40.
2) Always get at least +4 thief tools. (Available for pp) For those they don't have access, ask a guildy to buy them for u.
3) Unless you really don't want too play an elf, get auto detection. It is huge quality of life. And more or less required for LFMs and non solo playing.
4) Get evasion if you can. Get high dodge and all avoidance defenses. <- the combined 3 avoid defenses will make you tanky enough to be able to handle traps even in battle.
Trapper might not be the tankiest of toons, but make it a priority!
5) Do not play DPS if you are a noob. You will die constantly and not enjoy. Choose either trapper or DPS at start. Great option is crowed control. You are a trapper, learn to avoid agro.
6)I f you want to solo, use the traps in your advantage! Scout, detect traps lure monsters to take the damage! I played my 3rd life like that! Drow rogue mechanic. Full trapping, some stealth (to activate better scouting) and using when possible the dungeon to do the kills.
It was fun

not optimal, LFMs were a challenge (I could follow but not have a main role).
7) cannith crafting is your friend, but it is a big investment. Guildies, should be able to help you get the needed Items.
Cheers and happy trapping!