The platform is owned by Google. By using YouTube in any way, watching, liking, subscribing, commenting, searching, clicking, all of it, you’re “using Google”.
So, the answer is that you cannot use YouTube and not use Google.
If Google is broken up, that might change, but I’m not sure if that will ever happen, what form that might take or if it would ever happen at all.
Just because your microwave oven is not currently emitting 50 Watts per square metre doesn’t mean that others are not.
Just because it’s not doing so today, doesn’t mean that it won’t next week, month or year.