Nope. You must be Android Loillipop or higher. One tap root siya kaya safe.
Isang button lang click mo, need mo internet connection. Kung may error yan, automatic hindi magsu'successful ang rooting. Pero kapag nag 100% na ang loading na pinakita, kukusang mag restart phone mo. After restart, rooted ka na. You'll notice an app named super user.
Just do not format or perform factory reset while you are rooted and everything will be fine.
Remove mo na mga built in apps na not needed. Be cautious, you can remove everything including the settings app or google playstore. Then move the app you needed to move. Lahat ng yan link2s lang gagamitin. Kapag nanghingi ng permission, grant lang sa superuser.
After the phone is cleaned with unuseful app. Go back to the rooting app and tap full unroot. This will remove the root access and also the super user app.
Kung di ka satisfied, try yôutubê. Plenty of tutorials there.