Cleaning and bills: the two subjects that decide everything
Nobody moves out over the dishes. Everybody moves out over what the dishes came to mean.
Cleaning arguments are never really about hygiene, they are about fairness and invisibility. One person notices the bin is full and empties it; another genuinely does not see it, because their threshold is different. Over a term the first person accumulates a private ledger of unacknowledged labour and the second has no idea a ledger exists. The fix is unglamorous: make the work visible. A named roster on the fridge beats good intentions, because it converts an argument about character into an argument about a square on a chart, and the second kind is survivable.
Be specific about what a task means. Kitchen does not mean anything. Kitchen means bench wiped, sink empty, floor done, bin out on the right night. Rotate the jobs so the worst one moves, and set a rhythm rather than a standard, because a house that cleans on a set day is far more stable than a house that cleans when it looks bad, given that everyone's definition of bad differs by roughly a fortnight. If somebody genuinely cannot do their week, the answer is to swap it out loud and in advance, not to skip it and hope.
Bills need the same treatment: one shared record everybody can see, a fixed day, and one named person per account. Take a photo of meter readings when you move in and out. If the arrangement is that one housemate pays a bill and the others reimburse, that person is carrying a real risk, so keep it small, keep it visible, and settle quickly. And on the harder end, if a house is falling apart financially or somebody is not paying, do not improvise a legal position from what a friend told you. Tenancy rules differ by state and territory, and the tenancy authority where you live is where to get that answered properly.