Hi. When I do lats pull down, I use a Little wide
That shoulder grip. I shrug my shoulders down
And keep core tight. But I never feel any burn in
The lats. Sometimes, I fell very little burn in the
Ahouldrrs and fore arms. Very little burn. When I
Reach failure, I just can't pull the bar any more.
Is it okay to be like this? Or I am making
Mistake.

You muscles have become accustomed to the weight you use, now you have to ad more to make it more difficult.

So my form is okay right?

That would be up to a trainer, an on the spot expert who can actually observe your form. Form does nothing when you don't raise the level of work.