What home care method do you think is most effective?

These days, frequent visits to dermatologists and aestheticians are becoming a burden, so I've become increasingly interested in home care methods. In the past, home care methods were limited to things like sheet masks, but after researching, I discovered a truly diverse range of options. Some people report seeing improvements in their skin simply by changing their cleansing routine, while others find massage or using devices to be effective.
I was just curious: Among the home care methods you've consistently used, have you ever thought, "This is the real deal!" It would be incredibly helpful if you could recommend some that are affordable and easy to implement at home. Please share your experiences with how you maintain your skin condition!