need help

Hi, 

 

I get my W2 in just fine and it shows that I get a refund. But I have a 1099-R from were my dad passed away in Dec 2018 he left me as his beneficary of his union pensions for 7 months. I had them take out taxes every month. When I go to add that in to Turbo tax my refund turns around into saying that I owed almost 600 and it asks me RMD and other things. Shouldn't it be pretty much straight forward? Plus should I be getting penalized that bad from what my dad left me? I started with a $466 refund. then went to $593 in the hole. I don't make that much money to begin with.