they are all cover for ultra individualist ‘I got mine’ ways of thinking.

Maximizing individual freedoms is not implying that it is at the expense of the freedoms of others.

I’ve seen that kind of thinking take over in some towns near me where they weren’t sure how they were going to repair streets or keep the streetlights on because “private entities will have a natural interest in handling those things” but they never do.

Hm, streetlights would fall into a category of something called a natural monopoly. A Georgist would probably say that natural monopolies should be owned, or tightly regulated by the state -- a monopoly is inherently anti-competitive, as a result, it is fundamentally opposed to a competitive free market.

legal abortions

I will say, with certainty, that there is borderline zero consensus across all libertarians on how abortions should be handled. This is a tricky issue. I personally think that any solution will lie entirely within the grey, rather than the black and white. I suspect that no solution will be agreeable to all.

Libertarians seem the least interested in actually enacting

This is a dubious statement -- it falsely generalizes to all libertarians. It entirely depends on who you talk to.

And that’s because sure maybe some of them support those ideas, but they like the idea of fewer taxes and fewer regulations to help their bottom line a lot more.

While, yes, fewer taxes, and regulation increase profits, that's not their only purpose. Reductions in those result in increases in scale of the free market. It could be argued, dependent on circumstance, whether such decreases are actually beneficial, or not, but, at any rate, reductions in taxes and regulations don't only serve the purpose of lining the pockets of special interest groups.

It’s embarrassing because it is conclusive that we are better when we work together and combine our efforts, and Libertarianism only drags us apart.

While, idealistically, it would be great if all humans could work together, real life is unfortunately far from ideal.