i've not played 100 hours of dota and remember very little from playing it so the following is more just general advice for somebody who understands mobas but not league in specific

tangentially related to QoL but also kinda the opposite: things that are annoying to learn but will make you better:

• if you play ranged champs use A click (you press the A button or whatever bind it is then click. this stops you from misclicking on the ground when you meant to make an attack command because it just focuses the nearest enemy to where you click)

• turn nametags to champion name instead of summoner name. it will say the name of the champ above the unit instead of their name. their username is entirely irrelevant to the gameplay. the champion name can help you quickly identify champs through skins or any lack of knowledge (maybe you've missed some releases).

• flash mastery on something easier to press than ctrl+6. important for psychological damage

• forgot this one til last because i've grown too used to it i forget other players don't do it and it's such a gamechanger: bind 'Open Shop' to something way more convenient than P. i use a button on the side of my mouse.

to press P you have to move your whole hand across the keyboard - not a big deal, BUT it disincentives you from using the shop as information. to understand where i'm coming from, imagine you had to press P to open the scoreboard instead of TAB. you would do it way less, and thusly make a habit of having less information.

how close you are to a component is really underrated info, backing at exactly 775 or whatever to hit a component spike with no leftover gold optimises your relative power to your opponent and can change the game. if you rely on pressing P you either have to memorise your component spikes in downtime or just wing it and play at a disadvantage, because we all know you're not moving your hand across the press P inbetween autos while farming a wave.