My stepfather (Canadian) promised that my mother and I would reunite in Canada, but my immigration appeal was rejected. Will it affect my desire to study in Canada during this period?

Will have a certain impact. What the visa officer sees is that every applicant has an immigration tendency, so if the application for an immigrant visa is rejected and then the application for a study visa is made, the immigration tendency will be more serious in the eyes of the visa officer. The visa pass rate is also related to the following factors: whether the purpose of studying abroad is true; What is the exit record? Whether the economic situation is good enough depends on proving that you have enough ability to pay for studying abroad; Whether the chosen major and school are reasonable; Whether a detailed study plan has been made.