"When using be in an if clause for an unreal conditional sentence, always conjugate it as were, no matter what the subject is. Even if the subject is first-person singular (I) or third-person singular (he, she, or it), still use were with an if clause in unreal conditional sentences. "
potatan t1_iw1ug2k wrote
Reply to comment by ChrissyKin_93 in The effect of the First World War on names, in France [OC] by bjco
"When using be in an if clause for an unreal conditional sentence, always conjugate it as were, no matter what the subject is. Even if the subject is first-person singular (I) or third-person singular (he, she, or it), still use were with an if clause in unreal conditional sentences. "
https://www.grammarly.com/blog/conditional-sentences-was-instead-of-were/