ね seeks agreement, よ supplies information the listener does not have. Getting them wrong is what makes otherwise correct Japanese sound off.
Also known asne yo particlesね よsentence ending particlesshuujoshi
ね at the end of a sentence invites the listener to agree: “…, isn't it?”
いい てんきですね。
Nice weather, isn't it?
まいにち たいへんですね。
Every day — that must be tough.
ね assumes the listener shares your view and asks them to confirm it. It also shows sympathy: 大変ですね = “that must be hard for you”.
In the textbooksMinna I, lesson 4
ね seeks the listener's agreement (“…, right?”); よ asserts something you think they don't yet know (“I tell you”).
Your major is literature, right?
Tonkatsu isn't fish, you know.
ね at the very end invites the listener to confirm or agree — it assumes you both share the information (“…, isn't it?”).
よ marks information you believe is new to the listener and want to assert. Overusing よ can sound pushy, so use it when you're genuinely informing or reassuring.
In the textbooksGenki I, lesson 2