Everytime I try to use my tablet gt5220 samsung on playstore or download, it just keep loading with no difference, what might be the issue?

It's either you are loading a Facebook app that isn't compatible with your tab android OS Or Download the raw standalone 'Facebook apk' file from the web and try install this Or Check out the 'Facebook lite apk' file, it works great too on tabs FYI please: Raw apk or standalone apk file simply means ...you download NOT through the playstore

You can Install it form the Google Play Store.

use the browser to reinstall Play

download games

Check settings on your tablet and the store, make sure promissions are on

I suggest that you troubleshoot first, instead of a hard reset. Factory reset is within settings.
If any google app won't download nor install, it's probably because your google services are not updated or is corrupted. Try the next steps before factory reset.
1. Go to settings, scroll down to app.
2. From here search for PlayStore and tap it.
3. Tap Clear Cache and Clear data.
4. Go Back.
5. Search now for Google services, this one is not under the download tab, which you can notice at the top of the screen, instead got to All and scroll down until you find it.
6. Tap Clear Cache and Clear data if available.
7. Reboot phone or tablet.
Most of the time this procedure do work, some people also opt to remove the google account and sign in after the reboot.
After the boot, open the PlayStore, accept the agreement and try to download anything from the PlayStore that is compatible with your tablet. Also, just to be sure, go to settings, security, look for Unknown Sources and enable it. This feature allow you to install any apk file that is not from the PlayStore.

Go back to the website you've download it from

Your tablet is more likely a chinese no name one.
You can download the Play Store standalone version from here:
APK 12 FEB 2015 Google Play Store v5 2 13 Newest version unmodded

go to playstore on PC login with your gmail ID enter the tablet code and proceed.

Have you set up a gmail account on the android you may need to set up a different gmail account on the Nextbook .