help! skinny fat!

I'm a little concerned since you had an ED. You're already at the low end of a healthy BMI. Going to 75 will put you in the underweight category. Have you talked to a doctor about your weight goal?

To not look skinny fat, you need to get muscle. To do that, you should eat at least your maintenance calories and start lifting weights. Doing things like squats, deadlifts, bench presses, etc. You'd probably gain a bit but you would look thinner and fitter.