If a person is on life-support, and his organs are failing, and the probability of recovery is extremely low, can we as their family make a decision to, pull the plug (stop the use of life-support)?

Active euthanasia where patients may end their lives by for example lethal
injection is not permissible under any circumstances. Passive euthanasia
where patients may withold treatment or artificial life-support is only
permissible if a trustworthy specialist feels that there is no hope.

and Allah Ta'ala Knows Best

Mufti Ebrahim Desai