I cant seem to find anymore good games on Vizzed, I am sure there are thousands out there but I would like you to recommend me some:

As follow:

Best Shoot em up:

Best Side Scroller

Best Fighting game

Best car racing game

Best flying game

Best Flight simulator

etc.

Cross format of machines is fine.

So I don't know what it would be specifically under, but Monster Rancher 2 is a game I have thoroughly enjoyed. It is a breeder game, but the breeding is only based around building to fight in tournaments. It is a GBA game and personally I can spend hours upon hours playing it. 

As for best shoot 'em up, I'd advise you to play Doom II, or for a more modern experience, try any of the Halo games. They're genuinely fun.

I'm not really into side scrollers, myself. However, I recently played Dust: An Elysium Tale, which is currently on Games With Gold on Xbox LIVE. If you can, pick it up, it's a fun past-timer.

Best fighting game? Tekken 3, hands down, no competition. It's on the PlayStation. It has a lot of characters to play with. Tekken always were games with lots of characters, each having their own fighting style and button combinations, ensuring that there's at least one character you're good with. And Tekken 3 is still the best games in the series.

I keep finding myself getting new favourites in terms of car racers. One that will remain in my heart forever, is Ridge Racer Type 4 on the PlayStation. Midtown Madness is also still good fun. But my current favourite is Forza Motorsport 3. Might wanna try any of these out.

As for a flying game, and flight simulator.... Maybe an Ace Combat game? I played an Ace Combat game on the PlayStation once, and I remember loving it. Come to think of it, I should try to get my hands on a copy of that game again...

Anyway, there you go. Good luck!