How fast is Monero transaction?

Could you please elaborate on the speed of Monero transactions? I'm curious to know how quickly Monero completes its transactions compared to other cryptocurrencies. Does it offer instant confirmations or does it take some time for the transactions to be fully processed? Additionally, how does the speed of Monero transactions vary depending on factors like network congestion or the size of the transaction? Is it generally reliable in terms of transaction speed, especially for larger or more complex transactions? I'd appreciate your insights on this matter.