synonyms are actually ruining my life

ok so im looking at vocab and like... there are like five different words for 'suitable' or 'appropriate' or whatever and also sports/competitions?? wait is this a dumb question but do native speakers even care or do they just pick one at random? because i feel like im losing my mind trying to memorize the tiny differences when they literally translate to the exact same english word. idk maybe im just stupid lol