Bing found the following results
How to Use “Was” vs. “Were” Correctly | Grammarly
If I Was vs. If I Were - Grammar.com
Past Simple Tense be - was / were: Fun & Interactive English ... - YouTube
I 'was' or I 'were'? - English Language Learners Stack Exchange
Learn When To Use Was and Were - LanguageTool
I Was ... - To Be verb - Past Tense (basic English grammar)
Past continuous ( I was working ) - Cambridge Grammar
Was vs. Were - Usage, Examples and Worksheet - GRAMMARIST
WAS | definition in the Cambridge English Dictionary
Was / Were – To Be in Past Tense | Woodward English