I lost 10kg in 60 days; I am in my mid 30s. Lots of walks, less calories (but slowly increasing towards my needed range), lots of greens and food tilted towards

I lost 10kg in 60 days; I am in my mid 30s. Lots of walks, less calories (but slowly increasing towards my needed range), lots of greens and food tilted towards boiled, roasted, raw food; completely cutting of refined sugar, balancing carb intake, and greatly decreasing oil from life. Felt good to again not have those belly, love handle, chest, cheek, under-chin, thigh fats after a 3 year gap of COVID years. Then during new year holiday I was out for ~2 weeks and discipline fell somewhat (but not completely and I was anyway walking like crazy). Gained back 3 kgs and every bloody gram of these kgs came directly for the tummy and love handles. I mean it seemed body has a direct calorie pipe with outlets only around lower torso. I think walk alone doesn’t cut it. Some muscle mass might help. Gyms don’t light me up sadly. Sports do. Gotta find if there’s one that builds muscle :/