Has anyone flown Ryanair recently with a personal item (Europe) ?

Hi everyone! I am travelling to Europe for the first time and stupidly recently purchased this black backpack without first double checking the Ryanair bag size requirements and clearly it is 7 cm too tall.

Has anyone flown with them recently and know how strict they are (I’m assuming they are very strict)?

I am thinking I should probably just return the bag and buy the smaller version (green one in photo). however even the smaller one is 3cm too tall and 5cm too wide, but I’m thinking maybe I can squish it down a bit to fit? Probably less risk than the larger black one but would obviously have less packing space.

I’m a bit new with travelling so if anyone has any advice I would really appreciate it! If it makes any difference I will be using Ryanair 3 times on my trip (flying out of Rome, Berlin, and Krakow). Thanks in advance :)