You need an embassy visa for Hong Kong SAR if you have an Eswatini passport
Visa options for Hong Kong SAR
Visitor visa
Travelers need a visa to visit Hong Kong for Business or Tourism. A paper or embassy visa is the only visa available for travelers visiting Hong Kong. The visa is typically a stamp or sticker added to the passport. Travelers must obtain this visa from a local embassy, consulate or visa center before traveling.
This is not offered by sherpa°.
Apply on the government site.