What's a home repair "quick fix" you see homeowners try that actually makes the problem worse?

Curious to get pros and DIYers both weighing in here. I feel like almost every trade has one of those YouTube fixes that seems reasonable but ends up costing way more down the line. Caulking over a leak instead of finding the source. A bigger breaker instead of fixing the overload. Painting over water stains without solving the moisture issue. For homeowners: what's a "temporary fix" you tried that came back to bite you? For pros: what's the one you wish people would stop doing before calling you? Not trying to shame anyone half of these mistakes are genuinely reasonable-sounding in the moment. That's why they're so common. Mostly just want this to be a useful thread people can search later when they're tempted to do the same thing..