Protein

Have you set your calorie goal and your macros?  I am female so mine are probably lower than yours.  Once you get your macro goal, just look up some of the meats you like and see what size portions will come close to meeting that.  Remember if you are eating several meals then you need to spread it out.  My protein macro is 75g.  I usually have a 7oz solid serving of meat at dinner to make up 75% of that.  I could fit 10oz of meat in my macros, but not in my belly, so I have to make up the remainder from miscellaneous sources like dairy, bone broth, collagen and eggs.