How to choose a device that fits my skin?

It seems like many people these days use beauty devices because they don't have the time to go to a dermatologist and the cost is a burden.

My brother-in-law used the new device my sister-in-law bought, and the results were noticeably visible.

It seems like the device is actually effective.

However, since there are many different types of devices and prices vary widely, they say it is best to choose one based on your skin type and concerns.

I have internal dryness, I'm worried about wrinkles, and my skin is losing elasticity... It's a total mess, so what kind of device would be best for me to use?

Is the expensive one better, or is the cheap one not very effective?