You can have separate ringtones. So, you should update to the latest build.
I "DO NOT" recommend using ES file explorer simply because it had some major vulnerabilities and have been removed from Play store itself. So, wanted to grant root access to such an app is really a stupid step.Magisk does not grant root rights to ES File Explorer File Manager. Please correct this error.
In other words, it is impossible to get root access.
If not ES, then which file manager? I would recommend using CX file explorer ( free, ad free and very simple)
You can use any firmware above 063.So i should use the 087 firmware right? and which version of TWRP i can use?