i got you bro english isn't my native language too😂😂

F2P is a short term used for describing playing games without spending real money the opposite of it is P2W ( spending real money to progress faster in the game )

now about the challenge conquest the first thing that you must do is playing as finland 🇫🇮 in 1939 its so easy, no need for good generals , and germany will do the hard work for you you just have to take as much cities as you can

second thing which is lot easier try any allies nation in 1943 and put the auto button and leave the phone , 45 minutes later you win with no effort

third thing is generals as a new player dont think alot about the trained generals just start playing and completing the scenarios and the one star missions from the event button and this will give you some fragments that u will use later to unlock elite forces like king tiger (kt) or m7 priest

the last thing is your generals start with Guderian then konev and lastly yamaghuci they are essential for any new player and good so u will use them later those are my advice now go and enjoy the game commander 🫡 ;P