Your Edit 4 caught my attention. The fact that the counter stops right when the picture gets noisy might actually be a pretty useful clue.

From what I found, VCRs use a separate control track on the tape to help keep everything synchronized. If the deck loses that signal, it could explain both the counter stopping and the picture going haywire.

I'd be curious what happens if you play the same tape in another VCR. If the problem follows the tape, that tells you something. If it only happens in your LG, I'd start looking at the pinch roller or tape path.

Not saying that's definitely the issue, but it seems worth checking before replacing anything.

I did some AI-assisted research on this, so take it as a troubleshooting lead rather than a diagnosis.

does it do this with a different tape? if so capstan speed is very slightly out, or maybe pinch roller has gone hard and not pulling the tape well enough?

Going to need more information on the make/model of both the tape and the player to assist. There are a lot of bespoke implementations that could present similar issues for different reasons.

Update: I cleaned the whole pathway that the tape travels within the VCR, to no avail, but I experimented with extremely lightly giving the "tension arm" (it's called something else for Walkmans...) a little more tensions, and lo and behold, at the very least it influenced the duration of each individual noise occurrence. Push to hard and the noise in the attached video above disappears, but then other artifacts are introduced. On another Sharp VCR that I had, rest in peace, you could actually adjust the tension belt by hooking it further "back", giving it more tension, but not on this LG. Here is the part in talking about:

I'm thinking of it happens at the same time in the video it's the vhs. If not, its the vcr.