How do you guys find t-shirts?

I’m 5’10” and around 260 lbs, in my early 30s. I usually fit into an XXL in straight sizing but finding a t shirt I feel comfortable in is virtually impossible. I have a large chest I am extremely insecure about and an apron gut. Wearing my pants at my natural waist gives the Peter Griffin effect, so I generally wear my pants under the gut.

I try to very carefully style how I dress, usually a button down over a tank top or a t-shirt, but I don’t think I’ve worn just a t-shirt in public in 20 years. The thin ones cling, the heavyweight ones are either massive or cropped to the point where my belly peaks out. Finding a good t-shirt would be a life saver.