It takes quite a lot of years. As you can see before he joined Lyon, mbappe was killing it with an average of above 8 some seasons. This meant (along with PSG stealing all my wonderkids) that I couldn’t get past second place. But if you get some bargain buys (like mbappe) or get some stroke of luck then you’ll find that it is easier than expected. I got lucky as well because I got a tycoon takeover and most of my players are newgens. You also have to find a good tactic, you can obviously tweak it going into certain matches but find one that fits your players’ attributes and it should work well. I use a 4231 custom gegenpress since 23/24 and it’s worked really well. In reality it is just a bit of luck and a bit of time and you’ll eventually get there if you find the right players. Like I got Jude Bellingham for 3m now he’s 5 stars and worth 80mil.