I LOVED YuGiOh when I was younger
I have thousands of cards sitting around collecting dust right now. Back in the day, I made a really fun Ojama deck, which actually worked pretty well at the time due to Ojama Delta Hurricane and the new Ojama cards that supported the deck. I also made an old school stall control and burn deck, which was very frustrating for my opponents 
I played from around 2007-2012, then when XYZs came out I stopped following. Now I'm completely lost with the pendulum monsters 
Nice, I've seen those at Tournaments, and they ran very well at the time. I used to run a Burn deck back in the day too. I had so many decks, it was funny, lol.
My decks were the following- I wish I still had even 3 of these decks 
Warrior
Spellcaster
Burn
Lvl
Horus Beatdown (which I am running atm) (ofc I had to rebuy all the cards)
Lava Golem
Yata Lock/Spirit Reaper
Toon
Beginning/End (before Chaos Emperor Dragon was banned)
I'm 32 and a 10 year old taught me Pendulums and they are beastly. I have a Deskbot deck in the making, and those are OP. You should watch a yt vid on Pendulum summon, they are really nice.