Workout split with no equipment

Hi guys, im 20 years old, 5’7, 146 pounds and i dont have any equipment besides a 15lb dumb bell. Is there any workout splits i can do by the time to get a good foundation?

Im skinny fat with a lot of my fat at my stomach and barely any muscle anywhere. Diet wise, i eat protein with almost every meal around 4 days out of the week, the other days i get minimal amount (at least 20 grams) so im planning on getting protein supplements. I also walk 7 kms outside of my daily activities.

Not sure what else is relevant