In the Marvel Cinematic Universe's third phase, Spider-Man made his dramatic debut as the youngest and funniest Avenger yet. Peter Parker went from being a kid in Queens to a great costumed hero. He was also thrilled to have a cool new costume and have Tony Stark himself as a father figure. However, Spider-Man's time in the MCU wasn't all fun and games as it came with many harsh realities, realities.
Source:https://www.cbr.com/mcu-spider-man-heartbreaking-realities/