Macro isn't something that stops being a problem until high plat/low diamond. If I had to draw a rough outline of how to climb out of each elo/where each elo is weakest at that inhibits their ability to climb, it's:
Bronze - Knowledge/Egotistic
Silver - Champion Mechanics/Overconfident
Gold - Game Mechanics/Too humble
Plat - Understanding Composition (and how each champion should play any given matchup)/Egotistic and Angry
Diamond - Applying Game Knowledge (including macro)/Egotistic
Master+ - Reducing Mistakes per game and Punishing Mistakes
Gold elo players throw. A LOT. Because they don't really know much about the game or what to do. They only play for kills. How many times do you see people flash for kills and either die immediately after, or consequently die over and over while their flash is down. Or the botlane that goes 0/6 but still ends up winning the game. It's because people only care about KDA in Gold and don't really know or don't care what they do after they get a kill. They just stack up their kills and think they're good.
Because of this, you should NEVER surrender in Gold. Throws happen so frequently that even if all three of your inhibitors are down there's still a chance that one assassin on the enemy team is going to go in for a kill in your base while his entire team is still in their base and give you free 1000g shutdown and the 4v5 advantage.
What you should focus on in Gold is learning the mechanics of the game and how you can take advantage of them. It's rare that you can rely on your team, you need to know how to carry them. Don't say "I can't carry these noobs/trolls/feeders", because if a Master tier player can smurf from Iron to Diamond with only two losses with the same amount of noobs/trolls/feeders you get on your teams then there's clearly a way to carry them. That's where utilizing these game mechanics come in. You get a kill, now what do you do with it? Figuring out these miniature things and how you can utilize them as a SOLO player in SOLO queue is important to climbing.
Also, micro mechanics like pinging more often to get your team to back out of a dangerous situation or to signal to your team that you see an opportunity to engage, that something is warded etc. is important to climbing. Stutter stepping, staying at your max range as an adc/mage, leaving a fight when you're about to die rather than dying in the fight, etc.
Don't expect to see people with flawless macro until Diamond 3+.
