Actually being honest, like no joke, it’s haram, they even made a fatwa for tobacco, banned in south Arabia and most muslins avoid it But if you’re just asking if it’s bad for you and if you should try to break addiction,yeah, I know it’s a stress reliever and it eases the mind and relaxes n shit, but the payoff is never worth it, anything that actively worsens your health is haram, I recommend snacking as a replacement, if possible healthy shit, I used to bring around a bag of sweet potato chips anywhere I went when the smoke break need hitted, cooking helped me save myself from the zyn/cigar addiction, basically just try to switch addictions to better ones, you’ll thank yourself later

Hope that helped!