Male, late 20s. What can I expect from a canthoplasty? (photos)

Hi, User123Ukku ! Thank you for your question and photos.
Your eyes have a very slight negative canthal tilt, but I think the problem here is the low location of your brows. When brows are located down, the eyelid skin hangs over the eyes and cause non-fresh tired appearence. I think an endoscopic brow lift and upper blepharoplasty (if needed after browlift) will provide a fresh look and more positive eye angle.