I suggest you to wait a little bit before to spend money in the market; you should understand better which are the best players for your team but above all you need to know which is the balance of your economy. If now you've 500k, don't waste more than 200k in the market. In one week you can see and learn a lot of things, then you can spend all the money you want ;-)
1990-2022 Stalinorgel - https://www.youtube.com/watch?v=pV-Xppl6h8Et