The rare rational Leftist with whom can have an intelligent discussion sometimes asks us advocates of individual liberty what we mean by freedom or liberty. They are right to ask that. Over the centuries men have often fought for freedom. But what was the freedom from? Scots often declared that they were fighting for freedom. So did that mean that they wanted a deregulated state? Not at all. What they were fighting for was freedom from rule by the English. That the Scottish king was at least as tyrannical as the English king did not bother them. They saw it as a plus to be tyrannized by a fellow countryman.
And we see a similar ambiguity among libertarians. It is sometimes said that there are as many versions of libertarianism as there are libertarians. Libertarians may even want opposite things. Some libertarians, for instance, want freedom for all individuals to smoke anywhere they happen to be. That is a pretty purist libertarian position but, fortunately, not one often adopted.
In contrast, another libertarian may value the opportunity for all people everywhere to be able to breathe air unpolluted by the stink of tobacco smoke. So the two libertarians may want opposite things but value both things in the name of liberty.
Examples like that show that there really is no such thing as liberty in the abstract. There are only freedoms from particular things. Liberty is meaningless without a predicate.
So to be frank and honest in our discourses we should list and justify separately what liberties we value. Calling oneself a libertarian contains no real meaning at all. A common list of things that libertarians want includes things that both Leftists and conservatives want but there will be no universally agreed list of those things. We need to justify each of those freedoms by themselves. Saying grandly that we stand for "liberty" is meaningless or at least uninformative. And the same goes for individual liberty. There is no such thing by itself.
There is probably a fair amount of agreement about what liberties advocates of individual liberty want but that is just true of one particular time and place and one particular culture. So being a libertarian is not easy at all. It provides you with no magic key to unlock the "correct" position on any issue. We need to argue each point of the liberties we want. Saying that we stand for freedom is just slipshod. There is in fact no grand value that we are standing behind. A love of liberty is always a love of some particular liberties.
Particularly under the influence of Disraeli, English conservatives often said that they stood for traditional English liberties -- which gave a reasonably clear list of liberties -- but there is not much left of those liberties in England these days. The modern British state is a bureaucratic and authoritarian monster.
Libertarians do specify in general what liberties they want. They say that they oppose force, fraud and coercion. Unpacking those generalizations into particular policies is the problem, however -- as I have shown above with the example of smoking.
Note: I use liberty and freedom interchangeably, which I think is common. One word originates from Latin and the other from German but that seems to be the only difference.