You must have watched too many Pakistani movies and media if you think Pakistan can launch a nuclear weapon against India. In reality, they don’t have the capability to do so.
Pakistan believes the most credible way to deter a conventional war against a nuclear India is to asymmetrically escalate a conflict by threatening first use of tactical nuclear weapons on advancing Indian forces once they cross the border into Pakistani soil
Why Pakistan’s tactical nukes are inherently a threat to the country’s nuclear security.
thediplomat.com
What I find funny is that India has officially stated that it won’t allow Pakistan to use nuclear weapons on Pakistani territory. If Pakistan attempts to do so, India will intervene militarily in Pakistan. Lol
It's like if Pakistan tries to use nuclear weapons on Balochistan, India will neutralize the missiles and start bombing Pakistan's nuclear installations.