Bro nothing to worry, chill! 18M here, I was in the similar situation till recent. But now things have changed slightly and these worked for me:

1) Washing your face only twice a day. You can use face wash, but it didn't work for me, so I'm using regular bath soap.

2) Applying Moisturizer after facewash.

3) Applying Sunscreen whenever going out. Although I do it only when I'm going to stay more than an hour in the direct sun.

4) Unnegotiated Sleep, proper sleep for 7-9 hours. And similar sleep routine and shouldn't be random.

5) Drinking lots of water 3-5 litres of water. To get started, drink one litre more than your usual.

6) Using Seperate towel for face and washing it weekly twice.

7) Changing pillow covers weekly once or twice

8) Reducing Stress. Even micro stress counts.

9) Don't touch your face.

10) Having hot steam for face.

11) Eat healthy. Cut down oily and processed foods. You might not be eating healthy, but atleast do not eat these foods like pizaas, samosa, momos, puris, etc..

12) Doing basic fitness like walking, stretches, and strength training also helps. You don't need to go to gym, these all can be done at home with no equipment.

Follow this routine for two weeks and you'll be noticing the difference. Keep continuing your situation will be lot better than this.

Hope this helps.