10% is ideal for most people. Unless you have a considerable amount of muscle mass, you’re going to look malnourished at 7%. Even at that, you could easily be 12-14% and look fine if you have enough mass + good insertions.
If that picture is you, I’m sorry my friend… but you need to put on more mass if you want 7% to be a good look for you. You look skinny as fuck and you have a “rounded” look when it comes to your waist/abs because you need to work your obliques. Honestly, working your obliques might be the thing to do if you’re content with staying at 7%; it’ll fill in and make your v-taper look “straighter” compared to “curvy”.