What are the adhkar (remembrances of God) and tasbihat (glorifications of God) that enable me to attain the reward of Hajj while I am in my home, especially since I am unable to go and perform it?

Hajj is not obligatory unless the conditions of capability are met. There is nothing that can take the place of Hajj in fulfilling the obligation. However, in terms of reward, it has been established that whoever prays Fajr in congregation and then sits remembering Allah until the sun rises, then prays two rak'ahs, will have the reward of a complete, complete, complete Hajj and Umrah. This does not mean it is equivalent to Hajj in all respects, such as forgiveness. Visiting the grave of the Prophet, peace and blessings be upon him, is not permissible for which to undertake a journey specifically; rather, it should be incidental to visiting his mosque. No specific dhikr is known to equal the reward of Hajj other than what has been mentioned, but the virtue of dhikr is immense. One can transform their entire life into worship by obeying Allah's commands and avoiding His prohibitions with sincerity, even ordinary actions, with the correct intention. The forgiveness of sins and the answering of supplications are not restricted to a specific place or time. Sincere repentance and seeking forgiveness absolve sins, and supplications are answered when their conditions are met and their impediments are removed, at any time and in any place.