There is no scientific proof that there is any difference between relaxing in an chair and meditating following a strict form. The core is: it is very good to give the brain a brake in our busy times.
But it is also proven that it can be dangerous to give the brain a break when you have a troubles mind. Things can emerge from the depths which you should find help for.
A nice writeup about this is an article from 2016: https://www.psychologytoday.com/us/blog/mindfulness-wellbein...
But there is also more recent recearch that backs this up.
So: meditation/relaxing can be very good to reduce stress and to think more clearly. But take care: "Meditation is not a therapy"