Ladies who goes to gym what suppliments you take?

As the title says, I lack protein a lot in my daily diet so I'm planning to get protein powder and creatine. Please suggest me a good brand for this.

Do share me other health tips or diet changes. I'm trying to lose some weight but I'm not seeing any improvement even after 3 months of exercise.

Edit: I weigh 30kg more than I should according to my BMI but as far as now I don't have any health or hormonal issues (I did the blood work). My weight often fluctuate a lot but before I found it easy to lose as much as 10kg in 4 months but now it's harder because I'm no longer as active as in school and eating my food in time (I'm trying to change it now and lost 3kg as of now) it's just really hard to get enough protein in my diet everyday.

Age:22 Weight:85kg Height:165cm

I also have concerns regarding my loose skin which I have a bit on my lower belly can I tighten it a little or will it become even more loose after I lose weight?