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briefly looked for some info for ya about what device specific apps/bloatware would be safe to remove... here's a spreadsheat for samsung specific apps you are able to remove without causing any issues.
---> https://docs.google.com/spreadsheet...ZzBfWlR4MC03aDMyZ1BDUFNqU0E&usp=sharing#gid=0
(as it's not specifically for the tab 3 , there may be some other apps on there that aren't on your device or vice-versa) but there are definitely some common apps you can remove. make a backup before you start deleting stuff just in case.
good luck!