Im scared if im hacked

You can run MalwareBytes to see if any malware has been installed on the Mac. This is the only anti-virus type app you should use on a Mac. After running a scan and removing any discovered malware you should not need to keep MalwareBytes (if you do, then disable the real-time scanner). The other anti-virus apps are not needed on a Mac as they usually cause more problems than they solve plus they impact system performance.

I suggest you use another older computer just for accessing websites that are risky so if anything bad happens you are not risking any personal data or interfering with an important computer. You still have to be careful even when using another computer dedicated to risky websites since there are ways that this computer can be used to have your router or some IoT (Internet of Things) devices (cameras, Smart TVs, Smart refrigerators, etc.) hacked which can put everything on your home network at risk since the security on these home routers and other networked devices is extremely poor.

Have you tried powering off the iPod and powering the iPod back on?

Otherwise the only thing you can do with an iPod is to perform a DFU Restore which will completely wipe out everything on the iPad and reinstall the firmware & software to factory defaults.

https://www.imore.com/how-to-iphone-ipad-dfu-mode

The weak WiFi signal could mean your router needs rebooted. It could also mean there is something else interfering with your WiFi such as other WiFi networks or an appliance creating "noise" that is affecting the WiFi signal. There is a possibility that the version of iOS on the iPod has a WiFi bug or perhaps some app is using up resources (I know this can affect WiFi signal on an Apple laptop sometimes). It is really hard to troubleshoot WiFi issues especially with an iOS device since it is harder to monitor the iPods actual WiFi signal.

When rebooting the iPod make sure to quit all apps before rebooting the iPod.

I'm not an iOS expert. For the iPod issues you would be better off posting in the appropriate forum where you will find users that know more about iOS issues and how to troubleshoot them.