How do I remove focus from my IPhone 16?

I don’t know when Focus started taking over my phone. When I swipe down from the top of my phone, I see message after message blocks informing me I could not access these messages from different companies I use, or need to see the recent invoice to pay, such as Care Credit. I looked at In Focus, and there were three options. Clear as mud what to do, and no option to delete I.F. Today I picked up meds from the pharmacy. There was one I had never seen before. Read the label and discovered my physician had sent it to the pharmacy in 3/5. As crazy as it sounds, I have suspected I.F. of grabbing some of my notifications, can it also block calls? Recently I have experienced dangerously high blood pressure and high cholesterol. Never had an issue with them before but my physician told me this isn’t unusual when grieving a loved one’s death. Couple weeks ago I ended up in the ER because my doctor thought I was going to have a stroke. Thankfully bp lowering IV brought it down. My doctor prescribed two medications, and each day I take my bp and send it to him through an app. BP wasn’t going down so he increased the dosage and added another med. Friends kept telling me they couldn’t believe my doctor hasn’t reached out to me because it’s still high. Move forward to today. Imagine my surprise when I asked what this other medicine was, and that’s when I discovered it’s been there since 3/2. In Focus grabbing messages, and advising me I can’t read them while In Focus is not acceptable, and dangerous for someone like me with a new health issue, or worse for someone else. What if someone dies because they didn’t know a potential life saving message was hidden in this disgusting, how to completely delete, unwanted app?