I don't have abs now but when i used to work out i did have abs so let me tell u wat i did jogging is the key jog for like 20 to 30 minutes ,here's a method that i used nd was extremely effective jog for a minute walk for a minute it will really help, the other thing is abs workouts upper abs r easy to come just do seat ups or crunches but u should focus on ur lower abs nd do leg raises nd that kind of stuff. Basically my body is close to urs i am 178 n weight 70 so i think it will work 4 u 2. I my self used to struggle with abs so i started downloading videos of ab workout nd nutrition tips ,like most of the work to get good abs is at home in the kitchen so u really have to work on that too, and ur workouts must be done regularly like i used to do ab workout every day no matter wat day was it leg, biceps, triceps days even on chest days. I even used to do abs workouts at home on sundays when the gym was closed. So consistency , dedication and discipline are the key words so work on those too. And that's it at least I guess so😅