Pro-tip fo Climbing

After laning phase, attack the minions whenever its safe to do so.

Keep checking the map, and think "Can I safely collect these enemy minions and generate more map pressure?"

If the answer is yes, do it.

This is fundamentally a game about minions and towers... the more minions you have, the more towers you take, the more Win.

Champion combat is cool and flashy, but whichever team has more people CONSTANTLY safely rotating to clear and push minions safely wins.

This is the most underrated advice. ESPECIALLY in low elo, whichever team has more people efficiently attacking/pushing minions after laning wins.

Even if you're the only one doing it on the team, you get EXP level gains and more golds to fight later.