It’s fine, you don’t have to be the fastest growing economy in the world to be a meaningful global power and a good place where to live, get education, work. You need some level of growth, but it’s ok to no be at the top of the charts. The US has been the capitalist leader in the world for a long time and isn't going well at all, the country benefits its population very little. It’s not like only the actor with the top economic growth wins and all the other countries are losing.
The EU has some issues, the economy isn’t the most dynamic, but the quality of life is great and has been improving. It is a large global market and has cultural influence. Our democratic institutions have survived ok so far. I think we are doing quite ok. We will see if we can deal well with issues caused by our aging population, that’s pretty challenging but I think we are in a reasonable position (and actually a more than great position if we compare worldwide)