I have the volume at full blast, but I can barely hear anything coming out of it. I tried putting headphones and taking...

If the tablet does not charge, try wiggling the connector. If the tablet continues to not charge or only charges when the chord is held in a specific position, then you need to repair the USB port. If you are having trouble fitting the charger into the USB port, you may need to remove the connector and check if there is any debris in the port. If so, then clean out the port and try connecting the charger again. If the charger still does not fit, there is another underlying issue.