[machiaweliczny]

From this description it seems you have problems with implementation.

You probably lack in "coding"(maping solution to code) department - it's totally normal in language you don't work in day to day. You are probably less skilled in implementing simple, lower level abstractions - understandable given your background.

I have more exp than you - recently I was helping friend with python ML code - it took me 40 mins to code 20 lines. I don't feel bad at all, because even though I knew solution, to write it in python I had to google for each line and read docs to know range handling, dsl of libs, array comprehension syntax, lambdas etc.

Good news is that it's easy to get proficient fast by doing such exercises. I can recommend codewars.com