[Lukas Berger]

Look at the overall percentages in your league and I'm betting you'll see they're actually pretty accurate.

You can't just steal bases at will even with fast guys and slow catchers in real life.

You have a really, really small sample size there, and it's hard to tell anything conclusive from that small an amount of attempts.

How far into the season are you? If you're just a bit into the season, then you may just be running too much.

Of your examples f.e., Chris Taylor has 8 SB and 4 CS in his rl MLB career so far. James Jones 128/54 in his 6 year minor league career. So even Jones typically only runs 30-40 times in a single year in real life.

You're probably just running too much with them. It's important to pick your spots, which doesn't just mean going against catchers with low arm ratings. If you're running too much, teams expect it you will get thrown out more even by weaker catchers.