Iron 4, 0LP

Hello,

I'm an Iron 4 0LP LoL player, I'm fairly new to the game and before you ask any questions, I've spent more time watching guides, tutorials and pro players than playing the actual game.

I can't seem to improve anyhow, I tried playing unranked but I got smashed by emerald and diamond players so hard I didn't know where my head stands. So I went to competetive, where I usually say my apologies in advance that I'm a new player and I get flamed sometimes my team FFs in 15minutes. When I ask for advice all I get are insults and more insults and they are even from players that aren't getting any kills either.

I've watched tutorial saying "try to remember the most common champions on your lane and what they do" all confident I picked katarina and thought I'll destroy someone, well I got matched up with Jhin.... like who is this guy, will he fulfill my 3 wishes ?... wel..l no, he goes pew pew and I'm back in base, then he pulls out a frickin sniper rocket launcher and snipes me from under his turret when I'm under my turret, no matter what I learn from tutorials, in the game it just doesn't work.

I tried going mordekaiser top, on enemy team was some bear, I killed him before minions even spawned, I healed with potions to full HP, we had same items, the only thing that changed was we gained some abilities, we went 1v1 again me confident I'll win since I won before and nothing changed... I got obliterated, I didn't take down even quarter of his HP.. Like how ?? how did his damage improve so much without any items?

I played different roles and different types of champions but nothing ever works, eventhough I'm the lowest elo in the game possible, people who play on my elo are players that have hundreds sometimes even over thousand hours on the game, like how do I compete, give me some beginners or bad players in my game, how does hiearchy in ranks work in this game, Iron in LoL is the same as like Gold in Valorant, or Gold Nova in CS, people in Iron know what they are doing, in other games they have no clue what they are doing they just press buttons