The main advantages are vibrant colours, pure blacks, infinite contrast, wide viewing angles, no uneven lighting or blooming around bright objects on dark backgrounds compared to LED TVs.
But all of the Screen technologies have pros and cons.
Oled TVs aren’t as bright as some of the LED,QLED and Mini LED TVs on the market but in the last year or so they are starting to get there with brightness.
The only way to actually tell is go and view TV’s and compare them or see them side by side.
If you happy with your TV then I wouldn’t worry.
When I have gone and viewed TVs the Oled, QD-Oled and Mini LED TV’s always look better than the standard LED TV’s.
If you have bad eyesight and don’t use glasses to correct it then I would just buy any TV as it won’t matter what you are watching.