When you ask Allah directly for something in general duaa, you do not say “in shaa Allah”.

When you mention something that you are about to do or plan on doing it, you say it.

i wanted to ask when is it permissible to say Insha Allah and when its not, for example if i want something from Allah and i really want him to give me that thing is it ok i say insha Allah excepts my dua or in that situation i dont say insha Allah. And one day i was going somewhere and i said insha Allah hope they have what am looking for in the store someone said i shouldnt say insha Aĺlah.