"left lebertarian" doesn't exist. The square political compass is a BS. The real compass is a triangle.
Discussion
The bottom point of that triangle is anarchocapitalist. One you go a bit up, there's left and right even in the triangle.
I would rather argue that left and right started flipping. Once "my body, my autonomy" became "you need the vaccine or else...", once pioneers for free speech went "we need to censor hybrid threats".
Same with the right.
Left libertarian is: gun ownership, free speech, do whatever you want with your body, including drugs, prostitution, eutanasia, free choice of money, ...
They are still positive rights (left), but not too many forced things.
Also, I was talking about left libertarian society, not government. You can have society that has solidarity and all the good things from the left, without it being enforced by the government. Left libertarian values mean that the society wants it and delivers it. Voluntary environmentalism and things like that.
The thing is, those "left" and "right" are actually very close to the center. So yes, in minarchy a slight deviation from the center doesn't bother me nearly as much as authoritarian extremists.
I don't think solidarity can be meaningfully marked as "left" trait. I know a shitload of people who consider themselves "right" but do have solidarity. Once you're libertarian those axes lose meaning.
Who should the authorities favor?
a) No one (the libertarian to fascist axis)
b) The strong (monarchist to national socialist axis)
c) The weak (democrat to communist axis)