I want to gain weight! Help!

I really want to gain weight but it seems hard. I can’t go to the gym to lift weights. And my lifestyle is always on the go. I’ve been reading about apetamin and other pills and this mass gainer. I’m wondering if anyone here has tried any of these products and has successfully gained weight. I read people do but I don’t know if they’re saying the truth. If there’s any other way you know or that has helped you gain weight please share it! 💜