There's so many correct answers to your question. You can get closer to that guy's physique, but understand that it's going to look a bit different on your body. There are two major components to building a great physique, and you can't skip either one: nutrition and training.
- Nutrition is composed of total calories, macro nutrients and micro nutrients in the correct balance to help you cut fat and increase muscle.
- You need a target body fat percentage of 8-12% to achieve the definition of the model you linked to.
- You also need to increase your muscle mass.
Getting to 8-12% body fat is all about nutrition. You need to eat enough protein and carbs to support the testosterone levels needed and at least preserve muscle mass while cutting. You can use the chart below to estimate where you are in your journey. The way you describe yourself leads me to believe that you are somewhere around 20% body fat.
Compound exercises are a great way to build mass. You will do better starting with someone else's program before you start tailoring things to your individual needs. You can start with this beginner program. It should give you some structure and help you grow as a lifter. I would start by not deviating from it, but after you are done with the prescribed 12 weeks you can begin tailoring your work around what you perceive are problem areas.
I recommend finding a good support group that can help you troubleshoot what might not be working as well as you like. The last bit of advice I have for you is this:
There is no such thing as "best" or "optimal" in fitness. There is only "better".
It's so easy to get stuck on trying to find the best way or the most optimal way to cut fat, build muscle, etc. Every one of us responds differently to the same stimulus. All that means is that what works better for one person might not work better for you. Even when you find something that works, you may discover a better way later on. At the end of the day, you need to be working towards a better you, however you define it. Real world transformations take months to years.