Unfortunately (or fortunately), the virus is a living organism, due to vaccination taking place for the elderly first, the virus is a living organism and in order to survive, it has to infect in order to survive. As a result, it is now infecting the younger generations. Our only way out of this Pandemic is vaccinations, unfortunately in most EU countries the vaccination program for ages below 40 is still in early stages.
For instance, in Greece ages 30-39 started a few weeks ago, I'm now waiting for ages below 30 to start, in order to arrange an appointment for myself.
Consider yourselves lucky. Here in India, only one or two states are allowing those who are aged 18-45 to get an appointment. The vaccination is still limited to those who are above 45 years in most of the states. And I don't know the exact reason, but the pace of vaccination has gone down drastically in many of the regions. Previously up to 3 million people were getting vaccinated every day. Now that number has fallen to around 1 million. At this rate, it will take 6 years to vaccinate everyone.