In summary: in such a heavily contested, highly fortified area, Ukraine literally has no options. There is nothing in the world they can do, no weapon in the world you can give them, that can allow them to breach Russian lines here. The only way it can happen is by sheer overwhelming force where they sustain massively disproportionate casualties, but “rush forward” in human wave equivalents and try to overrun Russian lines.

And the problem is, as others have mentioned the West is only capable of teaching them COIN (Counter Insurgency tactics), which is really all that the West practices anymore. COIN doesn’t work against a superpower with classical large formation structures on open fields.

Further, I saw many claims from Western ex-military personnel on social media who claim that NATO armies would never use such tactics, and that the first thing they’re taught is to never bunch up, etc, etc. The problem here is: no one in NATO has ever had to navigate such a highly contested environment, not only from the standpoint of not having air dominance/superiority/support, but even having to actually work through minefields like these in a contested environment with large maneuver formations.