Alternative form of too many cooks spoil the broth

One cannot expect success at the first attempt; practice makes perfect.

(UK) Having lost its original value / Of food, that has deteriorated to the point of no longer being usable or edible.

simple past tense and past participle of spoil

One who spoils; a plunderer; a pillager; a robber; a despoiler. / One who corrupts, mars, or renders useless.

(transitive, fandom slang) To mark (a document or message) with a spoiler warning, to prevent readers from accidentally learning details they would prefer not to know.

(voting theory) the effect a minor party candidate with little chance of winning has upon a close election, when that candidate's presence in the election draws votes from a candidate similar to them, thereby causing a candidate dissimilar to them to win the election.

Someone who puts an end to others' fun, especially harmless fun.

Like a spoilsport.

Having such a selection of good choices that deciding which one to pick is difficult.