Can I have both
is it better to:

2nd one, cuz I will go expecting nothing but well things might work well and my hope will go up and I will be happy

You can't lose hope if you never had any. Oh also, the second one will see there's good into he world eventually.

A combination would be nice. Be happy that they’re alive and well and can do fun and exciting things. But be aware of the dangers of the world and stay alert and cautious in certain places or events. Have overall peace, but be aware not every situation is safe for them
1. Have a child who is raised to believe the world is great, everyone is nice, and nothing can ever go wrong. Or...
2. Have a child who is raised to believe that there is no hope in life at all, and does not trust anyone, or anything.
I know you might just choose the first one, but there are also downsides to it:
The child will walk into the world thinking everything will be easy, and everyone will be nice. But that is not true at all. So, in the end they'll end up disappointed, hopeless, and maybe even depressed. Although, there are great parts of life, the child will still end up very let down from what they imagined.
And the second one, I know you might think is worse. The child will go into the world knowing what to expect, although the world isn't always great, it isn't always bad either. So, the child will just always be expecting bad, which is what they will get then, since they are always focused on it, and not the beautiful things in life.
So what mindset do you think is better?