Hi Swetal.
I recommend WAVE. (Web accessibility evaluation tool) The browser extension is easy and convenient to use.
I use AXE in addition to WAVE. A few more steps are needed to evaluate a page with AXE.
I run both tools when checking a page. I run WAVE first in Firefox and fix any errors, then running AXE in Chrome.
One process may pick up an error that the other tool misses.
Note: Never rely on an overlay, no matter what the selling company may tell you. They often make it more difficult for a person who relies on assistive technology. Overlays are not a solution to incorrect coding. It’s like trying to add the eggs after you bake the cake.
Kindest regards,