It's important to note that Eritrea has several languages, and "Ametsebeha!" is the most common way to say thanks in Tigrinya, which is one of the most widely spoken languages.
Here are some other ways to say thanks in different Eritrean languages:
* "Ametsebeha!" (Tigrinya)
* "Amlak!" (Tigrinya, more formal)
* "Te'eshukr!" (Arabic, widely understood)
* "Shi'kur!" (Arabic, shorter version)
It's always helpful to know the language someone speaks if you're unsure how to say something.