So is this what someone told you and you believed it, or are you just straight making shit up?
Merkel (and others, but most famously Merkel) openly boasted about how the Minsk Agreements were designed to buy more time to arm Ukraine for the conflict they were intentionally and actively trying to provoke, and weren’t ever serious attempts at peace. What Russia did wrong in that case was to be apparently stupid enough to believe Ukraine and the western backers would honor the Minsk Agreements. Russia rolling into Ukraine was a result of the breaking of Minsk.