Everything looks pretty much good to me, but seeing as you made this post wanting actual things that are roastable and could help you improve ill list some things.
You can obviously survive without touching any of these things but I feel like I need to say something else besides just saying it is good.
Main thing I feel is a little off is speed for an a site that sells things. Maybe it is just because im not from india but it was a little slow for me which hurts conversions.
Defer offscreen images
Serve images in next-gen formats
Eliminate render-blocking resources
use passive listeners to improve scrolling performance
try to avoid excessive
DOM size
some of your buttons were not (48x48px) so they are not mobile friendly.
View attachment 252470
but besides little things like that im not really seeing any big issues on a glance so dont really take that to heart, many of these things you can never touch and still be successful.