the french modern coins

i just collect coins mostly for fun but i bought a lot of coins and have a lot of diffrent coins and most of them are french so i  have every 5  centime coin (fifth republic) and almost by like 2 or three years each completed the 10 and 20 centime coins (also fifth republic) i just wanted to ask if its hard to do because i was not trying to complete them but still did it.