You can take a chance and go to the abandoned school. God willing, you may be able to find many precious resources to help you create more powerful weapons to boost your chances of survival.
The market will be open in the first 30 minutes of each hour. Enter the chat room during those times to communicate with other survivors and exchange information to help you survive. But remember that not all survivors are friendly.
Union traders may be helpful under the right circumstances. They can never refuse a good deal. Trade with them your unwanted items, as long as your items are attractive enough for them.