The ideological difference is that conservatives and libertarians prefer the same amount of confiscation by force, but prefer it to be directed by billionaires rather than by democracy.
Do you have any evidence of this? Anything at all?
It might be worth taking a minute to understand what they actually believe, you may be surprised to find that even though they aren't part of whatever tribe you're in, that they are very reasonable people who also want the best for everyone.