Zoloft makes me feel worse?

I’ve been diagnosed with anxiety, depression, and ptsd and was given Zoloft back in December 2019. I’ve taken it daily up until now and I just feel like it doesn’t help but not only that it makes me worse off? It helped in the beginning and the first 6 months I’d say but after that even with increasing doses it doesn’t seem to do anything? In fact I find im back to using my unhealthy coping mechanisms like staring at my phone all day as a distraction, not wanting to leave the house like go to the gym, putting things off until the last minute, binge eating, eating candy to make myself feel better. I’ve gained so much weight as well. When I first started taking it the sugar carvings were gone. Then they came back within 6-12 months. It’s been downhill since then. I just hate that I struggle so much daily. Life shouldn’t be this hard. I feel alone like everyone else gets by so simply and I’m here struggling to basic things. Is everyone else like this but they hide it well? I’m wondering if it’s time to get off the meds or maybe switch? I’m almost on the highest dose.