Of all the possible pictures of this dude you could've posted, you chose one that could very easily make people think is what you currently look like. Not cool.
Why do you think you're stuck? Have you not seen muscle gains or fat loss for a few months? How tall are you and about how fat are you currently?
Why not? "More training = more results" isn't always how it works. 3 workouts a week of Chest-Shoulders-Tris/Back-Bis/Legs is a very well-known and accepted bodybuilding split used by tons of guys over the years, including Frank Zane (a classic "aesthetic" physique). It'd be something like 3-4 exercises for larger bodyparts and 2-3 exercises for smaller parts, with volume laid out similarly.
But if you did want to train more often, no problem. Like the guys said, you could definitely set up the same basic split to train 5 days a week. I'd probably go something like:
On weeks where you're hitting the same bodyparts for a second workout, use moderate to higher reps (like 8-10 and up) in one session and go heavier/lower reps (6-8 or below) in the other.