There is no option to download just one sticker on WhatsApp. However, this new option has been added to the new beta version of WhatsApp and it is expected that this feature will be released soon with a stable update. If you want to use this option too, your phone should have Android beta version 2.19.33 of WhatsApp.
After downloading the latest beta version, go to the WhatsApp Sticker Store and press and hold the sticker you want to download. You will then have the option of whether you want to set this sticker as a choice. Not only this, it will also show you the download size of a single sticker. This feature will be special for all those who just want to keep the sticker of their choice, appropriate or say it will save data. For the information of your people let us know that this feature is the first WhatsApp beta news tracker website WABetaInfo Gave place.