Hi shweta,

1 & 3. Please add below Custom CSS code to Theme Settings > Custom CSS > Global custom CSS

.product-grid-item .top-information .wd-entities-title,
.product-grid-item .top-information .price,
.related-products .wd-buttons.wd-pos-r-t,
.related-products .product.wd-hover-alt .wd-add-btn{
	display: none;
}

.related-products .product-element-top:hover .hover-img {
    opacity: 0;
    transform: none;
}

.related-products .product.wd-hover-alt:not(.wd-variation-active):is(.purchasable,.product-type-grouped):hover .swap-elements {
    transform: translateY(0);
}

2. Please provide me with screenshots for better understanding.

Regards,