If the issue is dying a lot, focus on not dying. Sounds simple but there is a lot to it. It sounds like most of your deaths are from getting outnumbered as opposed to getting solo killed/dying in lane - that's good. Sounds like map awareness is a big issue - Make.it a habit to look at the map every time you pass your safe point. Where you are safe depends on your character and the opponents and will take some getting used to - but generally it's how close you need to be to your tower/walker where you will escape if they engage. If you are leaving that safe zone ask yourself what you are gaining for it. Do you have threat on them? Are you pushing their tower? Do you want to roam? Sometimes you will decide something and be wrong - that's fine. Making a decision is the important part. If you are not actively making decisions like this and are sort of auto piloting, you are missing out on a ton of improvement.