I’m not sure what you’re saying here. “Advice” is a noun. “Advise” is a verb. No way. I’m way more polite than Trump! Although that’s a pretty low bar. I just wish people wouldn’t post wildly incorrect stuff here. Or correct stuff from other people that doesn’t need correcting. Can I make a recommendation without being rude? You should say “You state it’s a necessity”. In English you need to add the “it” in cases like this.