What cultural faux pas should I try to avoid making in Angola?

"It is important to be respectful of local customs and traditions when visiting Angola. Avoid making negative comments about the country or its people, as this can be seen as offensive. Additionally, it is important to dress modestly and to avoid public displays of affection. It is also important to be aware of the local language and to be respectful when speaking to locals. Finally, it is important to be aware of the local laws and to avoid engaging in activities that are illegal in Angola," mentioned another expat when asked about moving to Angola.