Just got humbled by my own stupidity: even a small swap can fail. I clearly set the slippage to a “close enough” level, but the pool depth was so thin it might as well have been paper. I even chased the price with two separate orders—my first trade pushed the price off-course, and the second one hit the boundary and rolled back, effectively giving away a gas fee. My mindset completely shattered.

Later I found the issue wasn’t some mystical thing like “slippage being too small/too large.” It was that my order execution timing was too rushed. If the depth isn’t enough, don’t force it. I’d rather split it into smaller parts, wait for one or two blocks, or just switch to a route/aggregator with better liquidity. Also, I see L2s arguing every day about TPS, fees, and subsidies—honestly, for someone like me who just wants to pay fewer “tuition fees,” stop bragging… First, let’s get the trading experience and failure rate under control.

Anyway, next time I’ll check the depth before I take action, so I don’t end up sending red envelopes to miners/orderers again.