So your ship got destroyed, some person betrayed you and people tried to scam you.
This is part of Eve, it’s a ruthless universe. There is protection for newbies (people aren’t allowed to gank players in the few newbie systems), but apart from that you should rely on your common sense to not fall for scams. Don’t trust people or if you do, don’t risk anything you can’t afford losing.
Risk is part of the game and if you want a game without risk, Eve may not be for you.
But, if you are willing to get into this game, you could give one of the newbie alliances in null sec space a chance. In null you won’t suffer from wardecs, wardecs are a high sec space nuisance only. And in null you’re pretty safe when in alliance space, as long as you keep an eye on your intel channels and local. In high sec you don’t know who you can trust or cannot trust, in null sec it’s much easier: blue = friend, neutral = enemy.
Also, take a look at this thread about the ‘golden rules of Eve’, it may tell you something about the nature of this game.