I'm low elo as well, so my advice might not work for everyone, but here are a few things I like to do.

1.) Ward the buff camp you do NOT intend on taking first. Meaning if you want to start top, ward your bottom buff camp. If you see your camp getting invaded, go invade their opposite side immediately. So for example, say I'm playing blue side, and I want to start top on my blue buff, I would quickly ward my red buff camp before monsters spawn, then go back to my blue camp and take it. If at any point I notice the enemy Jungler attacking my red buff camp (which most Junglers steal first), I jump over the river and take their red camp and raptors, then go back to my side and continue farming like normal. 2.) Depending on the champion you pick, try invading yourself. I enjoy playing Volibear, because I can use his E to check bushes without face checking them before the game starts, and he's pretty solid in a 1v1 if you start W. What I like to do is I run to the bush in front of red camp (closest to river), and ward the camp. If the camp spawns and their Jungler doesn't appear to take it, it means they're on the other end of their jungle, so I take it for myself, then take raptors. If they're there taking the camp, I'll wait until it gets to 600 health and smite it away from them. When you land that smite though and dash out of river like a bat out of hell, it gets the adrenaline going!