I will buy wireless iPhone earphones, if I have spare money at the end of this month. [type 1 conditional - real present/future situation] If I had as much money as Bill Gates, I would purchase more COVID-19 vaccines for poor people in undeveloped countries. [type 2 conditional - unreal present/future situation] More information about conditionals (types 0 to 3 and mixed): https://www.ef.com/ca/english-resources/english-grammar/conditional/

I wanna buy a wireless iPhone earphones if I have spare money at the end of this month. If I have more money like Bill Gates, I am gonna purchase more COVID-19 vaccines for poor people in undeveloped countries.