How to Add Related Products, Up-sell, and Cross-sell in Magento 2
Related, Up-sell, and Cross-sell are three types of Magento products relation, it is often known as three sales techniques. Because it is created to reach customers' need so it helps us not only increase sales but also improve customers experience.
Check this post to know more about Related products, Up-sell, and Cross-sell: https://magepow.com/blog/post/three-sale-techniques
Magento brings to us the way to add product relation manually, it cost a little bit time but worth when it comes to its benefit.
Step 1: In Admin Panel -> Catalog -> Products
(You can choose storeview in a case you have multistore)
You can see Magento has a clear explanation for each Products relation
1. Click on Add Related Product
Choose what products that you see it related to the main product and can excite customers.
Remember that Related Product should have the same price as your product
You can use Filters to filter out the elements you need to find
2. Click on Add Up-sell Products
Choose what products you think it relates to the main product with a higher price, higher technology
You can grow the Up-sell by some trick like Offer Free Shipping, Limit the Price Increase, etc.
If you think Up-selling is not effective, you can consider about Down-selling
3. Click on Add Cross-sell Products
Choose what products which customers can buy after they complete the purchase process and go back to the shopping cart page. It can be the accessories of the product was purchased or it can be completely different products but can make customers satisfied
If you are using ALO Themes
Themes of Alothemes give you the ability to change it: Slide or not, arrange product vertical or horizontal, Infinite or limited, etc. It also can config the responsive for a specific screen.