Why do mods not work on my cracked minecraft?

Well, i play a cracked minecraft for temporary minecraft entertainment till my credit card is fixed so don't hate. I install them correctly and i check the log on the mod loader and delete the META-INF folder, it loads correctly and i can play it, but the mods dont show up. And my mods are the most recent versons but even though i make a new world and play on it, there not there and i dont get it. If someone can fix my problem, id appreciate it.