Cell was once the strongest villain the Z Fighters had ever faced.

Source: https://www.cbr.com/anime-villains-who-are-worse-in-sequel/

's cast is extremely battle-hardened, but if there's one exception among the Z Fighters, it's Gohan.

Source: https://www.cbr.com/fan-favorite-dbz-quotes-original-english-dub-ranked/

Since then, Yamcha has seemingly given up trying to keep up with the other Z Fighters in terms of power, and is currently barely a member of the squad as his last notable contribution was during a baseball game in a filler episode of the anime.

Source: https://screenrant.com/dragon-ball-goku-and-trunks-prove-yamcha-is-terribe/