Quick tutorial
When recruiting , think about how you want your team made up. 2 basic types , slap hitters and HR hitters.
Recruit for this like so.
Slap hitters : Slugging still matters but you want much fewer HR and the power to come from doubles and triples.
OBP and B.A. should rule here. Getting on is All important.
Speed helps and SB too but these are secondary.
HR hitters it should be again OBP and HR's.
Your pitchers should be recruited as follows: Whip , OAV as primary in that order.
Secondary but still important are percent of HR given up per 9 innings, Same with walks in no particular order.
Forget the era they had in real life because they are now going against all stars in every at bat.
When done recruiting, pick a ball park that matches your team.
If slap hitters then look at park description and go for a park that limits HR's with minus numbers.
If HR team then you want Plus numbers for HR in your park and minus numbers for singles double and triples.
I am not perfect so once you get good at this you may find nuances that I don't know. But this is a good tutorial to get you competitive.
Consider this a learning experience if you are losing but in your next team try some of these ideas and I hope they help.