help a nub out
hey guys im trying to gradually get better at the game and climb the ladder, but im to the point where i think i should find a champ and master it like most of the pro guides say i should. with the new rank que system it makes it easier than ever to choose the roles i want.
right now i switch between top and jungle. I was wondering if you guys could give me some champ recommendations that pref would work for both of those roles. i seem to really like a high dmg brawler, or assasin playstyle. thanks for your guys tips in advance!

Assassin damage with some good inherent tankiness
Supertank who also deals decent damage
Assassin with good survivability
One of the most annoying assassins in the game
Can be played kind of like a bruiser with high damage
Can be built more as an assassin or a tank. Fell out of favor with recent nerfs.
Good assassination ability and terrifying when fed
More of a supportive champion who can still deal a ton of damage
Another tank who deals surprising damage
More of a tank than a bruiser with tons of utility and sustain
Very mobile tank with good damage and utility
Not super tanky but deals a ton of AP damage. Traditionally a top laner but a lot of people are playing him in the jungle now.
Strong tank with good sustain and damage
Uber tank with some surprising damage. Kind of in a bad spot right now though.
Not very strong top lane but a beast in the jungle
Best tank killer in the game
Huge split push threat who deals a ton of damage
Incredibly tanky, incredibly fast, and incredibly annoying
High damage auto attacker with a ton of sustain