The point of bronze is to get really good at mental chess.
Not joking - in bronze your main enemy is your team, not the enemy team. You're not fighting the enemy, you're fighting tilt, A.D.D, and gamer fatigue (what I call "just not feeling the game right now") so your goal in bronze is to help to keep your team focused, motivated, and calm.
Try to give out really vague things to do (ex. "someone go top") that gets everyone to react (like, "someone go top" without fail send my entire freaking team up there, and I'm not even in Bronze anymore) until they start respecting your shotcalls enough they can listen to more advanced ones (ex. "Yi, go splitpush while the rest of us take dragon")
And if anyone starts raging at you for trying to shotcall, simply ask them "what's your plan then?" If they have one, great. Go with it. If it's a bad plan, everyone will stop listening to them and stick with your plan, and if it's a good plan, just let them plan. If they don't have a plan, reinforce that they need to follow your plan. If they just straight up refuse, they're gonna get reported for intentionally trolling the game at that point, because they're not working with the team and blatantly showing their refusal to in chat.