Need help with severe constipation ibs c

I have been dealing with ibs constipation for months now i use to have the opposite where I had the urgency to always go had that issue for years but then after I caught covid 2 times unvaccinated I got a bad fever 103 then it went away after that I notice something wasn't right with my stomach it burned and I had alot of pain urgency to go all the time so I did a endo scope they found I had gastritis and gastroduodentis i was taking all kinds of anti acids witch made my issue worst nothing was helping then one day I got bad cramps and diareah to where I had to go to the hospital they did a cat scan and it showed I had colitis so I was prescribe to antibiotics the antibiotics clear up all the inflamation got strep throat after that gave me more antibiotics that went away stomach was still giving me issues this time constipation so I did a colonoscopy they found 2 pylops and removed them non cancer everything I try to eat high fiber foods oat meal honey nut cherrios sweet potatoes graps salad flax seed chicken fish nothing help to poop for 9 days I have tried miralax suppositori they would work but then when I eat back to the same issue I have been diagnosed with ibs by 3 different gastros I have tried lactulose 2 times didn't even move me now I'm taking linzess 145mcg I took it for a month it helped but then I ran out and had to get it verified by my insurance I also notice I have to push very hard even with soft poop I have hemrroids it feels like something is blocked but all test show no obstruction or fecal impacted the cat scan showed mild lumber disc bulging I'm seeing my rumathologist at the end of July I decided to join a ibs forum for help because this issue is destroying my life I'm afraid to eat its makes my job difficult because I drive delivery and when I'm out my body wants to start acting like it wants to go some times it can go or it might just switch to diareah it's crazy hard for me to live a normal life and work I get so depressed I feel like I don't wanna live i drink tons of water work out most my life I use to be built never took steroids I'm 44 and I been to so many doctors no chrons or ulcerative colitis or celiac or allergies to no food it makes no sense please if some one deals with these same issues and found help please let me no it's like a never ending battle most times I have to dig my own poop out it's scary and I know it's un healthy I can't continue to live like this the strangest think is years ago before I had the issue I saw a physic and she read my palm and said to me do u have stomach issues I said no she then said I feel really sorry for u a day or 2 after that my stomach went crazy I use to take alot of gnc products I thought maybe that caused it I also have thyroid take levothyroxine I also notice before taking levothyroxine I was never constipated I'm not a doctor but I believe either covid twice or levothyroxine screwed with something in my body to switch it over to ibs c I even tried probiotics for a while no help now I'm just on linzess