As of Friday, citizens of Bosnia and Herzegovina can easier enter Serbia, because they can visit that country without having a negative PCR test, and the conditions for entering other countries around the world are different and are determined by the epidemiological situation.
BiH citizens, for example, have to submit a negative PCR test at the borders of many EU countries, because BiH is still on the red lists due to the pandemic.
The document of the Ministry of Foreign Affairs of BiH lists the possibilities for travel of BiH citizens abroad. You can see a complete overview of the conditions that BiH citizens must meet HERE.