You've got a major cleaning job so you can figure out the source and pace of the leak(s). That's your oil level sensor that's leaking. That's the one on the side of the oil pan. Your lower harness doesn't look good. There are signs of prior repair at the oil level sensor plug. There's still a good chance your oil pressure issue is just sensor and/or wiring. But the leaking fluids are the more pressing issue for now, especially if you're getting coolant that far back.