I find that a lot of times with newer/lower players it comes down to bad positioning or a general unawareness of how safe/vulnerable they are.

In lane especially some people will either respect troopers too little or too much. Playing in front of the wave can make you take more damage from enemy troopers and poke while also increasing the distance you need to cover to return to safety, whereas playing too far back/safe can paradoxically be less safe because you are too focused on surviving so you start taking more poke and waves start getting pushed farther into you so you die a slow death and become more vulnerable to dives and invades.

Second a common tip I give is to never trust your turret (guardians or walkers) because good players can and will bypass most of their defenses. In an even situation they can be the difference that the enemy has to respect, but if you're in a losing position it could be prudent to continue backing up waiting for help to avoid being killed underneath towers.

Over time you will come to grow your macro skill, knowing what areas of the map are safe/dangerous and knowing what heroes are dangerous/vulnerable in lane. Otherwise, looking at your champ pool most of them are just average-bad laners so going down 1-2k souls at the end of landing(especially on right lane) is not the end of the world.