Is the reward for congregational prayer accounted for one who calls the Adhan and prays alone in a mosque where no worshippers attend? And is it better to move to another mosque?

If you know or strongly believe that you will pray alone in your mosque, it is better to pray in congregation in another mosque or in your home. Some scholars are of the opinion that if the regular Imam prays alone at his usual time and intends to lead the prayer, he will receive the reward of the congregation. However, it is better to achieve congregation in another mosque if possible.