Gold min laner player wanting advice to reach plat..

So I play ryze, leblanc, and occasionally Lee sin if I get jg mainly. I usually win lane like 2/0 then make a mistake and die once and it goes down hill from there. Im trying to work on my knowledge of my macro play in knowing things like if it's better to attack the turret if enemy backed or look for a roam, How to rotate efficiently, how to/when to invade enemy jg for blue buff, what to do if enemy jg camps me until I die so I cant play aggressive or I die. When it's better to splitpush or be grouped. The most tilting thing for me I would say is leaving the enemy mid lane 0/3 just for him to come back 6/4 later throughout the game cus of teammates don't respond to mia pings. I understand I'm hardstuck gold for a reason, so advice by a higher elo player would be very appreciated. Thanks you for spending to your time to read this or commenting if your awesome 😁 (I have over 2k games ranked) so obviously I'm doing something wrong...