Unfortunately, I am in that same group. I can pitch pretty well, but I am still struggling to hit. I have gotten marginally better, but I am still one of the worst online hitters in the show. This game plays favorites by gifting the player they want to win all kinds of help, so not only do I have to outperform my opponent, I have to beat the AI as well.
I have a "winning" record, but once you eliminate the rage quits for those rare moments I am actually in the lead my record drops well below .500. So for the "get good" people I am trying to learn to ignore them, because with my 50 games played online and consistently getting matched up against guys 100 plus games over .500 and a lineup filled with .400 average and 80 homer hitters, or bling, GOAT, world series and world series flawless hitters the matchup is so overwhelmingly bad it is impossible to get better.
Then there is the fact that SDS constantly rewards cheesers and freezers to make things even more annoying. It's like telling the bad news bears before they got Kelly and Amanda to go play the 27 Yankees and "get good".