Libertarianism doesn’t dictate your personal values on how the world should be, just that your only tool for making it so are your life, body and property and that others shouldn’t take/hurt those tools and you shouldn’t hurt/take their’s.
So yes not all libertarians are going to feel the same way personally about immigration, abortion, multiculturalism etc. (and that’s fine)
Personally I’m very much for simpler more open immigration policies and feel diverse populations enhance markets and moderate conflicts, but it’s totally cool if you disagree with me, doesn’t mean you want to take/hurt my life, body or property.
Although people often conflate their personal views with Libertarianism and denigrate other people who Share very similar anti-force principles making hard to create a solid movement for individual liberty.
Focusing your advocacy attacking and demonizing those who don’t share the same personal values you do within the broader libertarian movement. (Worse than speaking to the choir, you are attacking the choir)
Focusing your advocacy on speaking to people with your values, the audience most likely to be receptive to what you have to say and getting them involved in the ideas of liberty. Treating movement politics as a fun game of capture the flag and that by competing over influence in the movement by numbers drives everyone to grow their numbers and the movement as a whole.
If you’re like myself and like talking to people who disagree as much as people who agree (being challenged is how I test myself, asking questions is how I learn) then adopt marketing principles of targeting and segmentation when you talk and be aware of your audience. Identify where your best path to adovacacy is and take it. Don’t rush to discuss the most alienating thing you can find for that audience. (It’s like visiting your spouses parents for the first time and talking about how good they are in bed)