You don't need to diet to lose weight. The so-called dieting is actually starving yourself, which is very harmful to your health. However, it is necessary to control eating, especially dinner, and never overdo it. You can eat normally, but avoid high-calorie foods and choose more nutritious ones.
The main motivation for losing weight still comes from exercise, which won't have a quick effect and needs a little persistence. But this is the safest and most stable way. Finally, I wish you success.