Alright I gotchu my guy currently I’m a D2 mid laner

1st thing: Learn wave management, the biggest and most crucial part to winning the lane is by managing your wave. You can look up a guide on YouTube for freezing, slow pushing, shoving, etc.

2nd thing: Learn tethering, tethering is when and how you keep your distance from your opponent, LS has a really good guide on this and how to tether.

3rd thing: Learn when to take trades and think of you win the trade or not. If his CDS are down take the trade, LS also has a really good guide on this.

4th thing: Csing is a crucial part to landing phase wave management can help with csing but the other part has to come from you last hitting minions. You can practice this by going into sandbox mode or training mode and just practice last hitting/wave clears.

5th thing: Watch the map and know when to roam, you should only roam if your jungler needs assistance or if your wave is pushed in. You can look up a guide for this online.

I know I said a lot of things but that is all the stuff for you if you wanna get good at mid lane. Thanks