Both are possible. There's a slight nuance.
1. You need "the" before "market".
2. You need a full stop at the end of both sentences.
3. There isn't any such thing as "more better". "Better" means "more good" or "more suitable". What's better? What's more suitable?"
You've opened multiple threads on this topic. You've asked the same question with different examples.
Why don't you provide context? By context I mean:
(1) Why are you telling the other person that you couldn't buy anything? How did the topic come up?
(2) When did this incident take place? A few hours earlier? A few weeks earlier?
In a real-life situation, I doubt such a sentence would actually be said.
Situation 1: Stole.
A: Hi. Where were you all this while?
B: I went to the market at about 10.
A: Two hours there and you didn't buy anything?
B: I couldn't. Someone stole my wallet. I've just been to the police station to make a report.
Situation 2: Had stolen.
A: I hate crowded touristy markets. I try to avoid them as much as I can.
B: I love them. I once spent three hours at one a couple of years ago, at this place we went to for a holiday.
A: You must have bought a lot of stuff.
B: Not a thing. I got there and realised someone had stolen my wallet. Probably a pickpocket on the bus. I just wandered around waiting for my wife. She'd gone somewhere else with my kids.
