Calories Question

Oke guys so I’ve been cutting for 2 months I think, I do weight lifting around 5 to 6 days per week, hoping to cut my fat percentage from 17% to 10%. I’m following an OMAD diet, around 600 to 800 calories a day. I’m going a little bit aggressive so I’m kind of scared that it’s not working at all. I mean, I did lose alot of weight but I think I also lost muscle mass, so my question is: My maintenance calories intake is around 2,491, to cut I should reduce that to around 1990 calories. But I’m eating like only around 600 to 800 calories. My main goal is to reduce fat percentage, should I eat MORE calories to reduce my fat percentage? I know it’s an ironic question but if I eat only 600 to 800 calories a day, am I losing any fat percentage at all? Should I eat around 1990 calories a day to successfully reduce my fat percentage faster than eating only 800kcal a day?

I am a 26 year old male who is 172 cm tall and weighs 69 kg.

Thank you everyone for your thoughts

Calories Question