Hey guys, so I've noticed about subjunctive but I am not quite sure what is the uses of it in a proper sentences.

one of its usages is for an unreal situation or hypothetical condition, such as If I were you bla bla bla, and the main rule is to remove the -es from the 3rd person singular verbs but, I've seen on the English forum that people said, "if she/he makes", isn't it a part of the subjunctive as the conditional situation started with If? It should be "if she make" right?, or it has different utilizations? that's extremely confusing, could someone please spare a time for me, and thank you for coming.