Russian

Would learning to speak russian be any more diffficult compared to learning to speak other indo european languages?

Native Russian speaker here.

Russian probably has more sounds than say.. American English.

Written Russian is not phonemic. Some examples: unstressed e becomes i as in песок (pesok, pronounced piSOK), unstressed o becomes a (or a neutralish vowel) as in молоко (moloko, pronounced malaKO), and all sorts of stuff like that.