I think a great way to get better at this is to ask more questions than provide answers. If you really hone in on what people are discussing, if you figure out what they want, what they’re afraid of, what they’re unsure of, etc. your suggestion will mean a lot more than if you’re perceived as “barging in and ordering people around”. I’ve practiced the Socratic method a lot with a lot of people, and it can really help to give your arguments some extra punch. Remember than people usually don’t want to be told “we need to do X” - they want to believe that they had a part in discovering and advocating for that, even if the whole thing was your idea all along.