I've lost 25 lbs since March. Mainly by cutting out fatty/fried food/sweets and consistently staying below 1800 calories a day. But I think the one game changer that's allowed me to safely stay at cut calorie deficits is switching to eating one meal a day.
It's not for everybody and I didn't think it would be for me until I actually did it. But it's genuinely been pretty easy for me, especially since I work a second shift schedule so I already don't eat breakfast. So the only thing I really had to adjust was my mindset to not eat anything during the lunch to dinner timeframe, which I've replaced with drinking water, coffee, and green tea. And because I'm only eating one meal I get to have a big meal. If its chicken day, that can be three or even four chicken thighs if I remove the skin, stir fry veggies, brown/white mixed rice. If it's seafood day I'll air fry some salmon or trout or shrimp or both and a huge bowl of veggies. I'm actually about to make that right now for my dinner tomorrow
Point is it's a full volume of food that I get to look forward to so I'm more than full by the time I'm finished. And if I get hungry by the time I get home or post workout I still have room for a light snack like apple+yogurt+berries or chicken sausage/keto bread+mustard, without going over 1800. Most days I don't even need the snack and I end the day around 1400-1500 without feeling hungry. I find this one big meal a day much preferable to 2 or 3 smaller meals.
I also walk for an hour every night. But I think its the switch in my diet that's caused the lbs to melt off.