Magento 2, Get Shopping cart rule data by the coupon id to retrieve information of coupon code, the coupon used details, rule id and usage limit of the coupon.
Coupon details are saved in the salesrule_coupon table of the database.
How to Delete Order item by id Magento 2?
Magento 2, Sales Order item has information of Order items like Item Id, Parent order id, SKU, name, and much more information.
If you want to delete an Order item by item id using Magento 2, You can delete it safely using OrderItemRepositoryInterface.
How to Get Cross sell Products Collection in Magento 2?
CrossSell Products display on the Cart page of the store on the eCommerce Website.
Cross-sell Products in Magento 2 are displayed on the cart page with labels like, “More Choices“ and display a list of available products by matching rules on the cart page in Magento Commerce.
Native Magento displays 9 Cross-sell items on the cart page and if you want to display more than the default limit you can override the PHP file with How to change CrossSell product limit in Magento 2?