I got to confess, i barely know about the terms "Microcheating" so the following answer will be based on my very limited knowledge of said terms okay? I think microcheating is the things that are so small but will end up breaking the relationship if we let them be. Like a snowball avalanche if you will. The example that i can think of at the moment are like texting your ex without any urgency behind your current partner or flirting to pretty much everyone even though you clearly already have a partner and also just telling everyone you're single even though, well, you already have a partner. There are countless of examples that i can provide but well, i'm tired of writing lolololol