as a person who has good stats in skywars the reason why most people die in the beginning is either falling off the map, being too slow, taking unnecessary fights. falling off the map is easy to stop it's just bridging at easier points of islands and holding shift and right click. Being too slow is easy to fix it's a combination of taking what you need out of chests, bridging at spots that makes it quicker to reach islands, knowing timings on the map (how long players take to get to mid for example). Taking unnecessary fights are something that is very hard to do, especially for unexperienced players. I know you want to fight people to win but theres no point in fighting someone that has double the armour or fighting someone and getting hit in the back by a third party. Be aware of what you have, your strength as a player, and the people around you can you won't take unnecessary fights.