I don't think they are totally garbage trainees, in fact they were probably worth a lot more at the begging of the season. The problem is that this is no longer the begging of the season. These players only have a handful of weeks before they turn 18. I would have not paid the money that you did for them and rather invested in the draft for this next year for several reasons.
1. It would be cheaper than buying these guys.
2. You would hopefully get 18 years old at the beginning of the season.
3. Drafted players would strengthen merchandise income.
4. You are literally in a league full of bots. (If it didn't hurt attendance so much , I would recommend you try to tank to
4th place to increase your draft number since even the playoffs will be a piece of cake.)
5. Even if you didn't draft well,other draftees are cheaper at that time because of so many flooding the market.
But as of now I would say to focus on one of these guys if you are going to train them. Because they both have different deficiencies, training to fix both and switching off every week would make those skills stay relatively low for quite a while.
For example #1 has atrocious passing and #2 has atrocious jump range. By training passing one week and outside shooting the next you would slow both of the trainees growth. Perhaps if you do wish to keep both you could train them in skills they both are bad at like handling and driving. These are generally not super attractive skills like some others, but nobody like to see skills below respectable and these will be the fastest to train up to that level for sure. Which could possibly help you train other skills due to the elasticity effect.