I'd like to address the fact you are in Europe. The matter of finding a Therapist may not be your choice to make. In many countries with universal medicare, a therapist is selected for you based on a psychiatrist's/doctor's/clinic's referral.

My advice, regardless, is that your family doctor is the place to start. S/he will make a general assessment of your needs and refer you to a therapist (whether state or user pay) accordingly.

Check with your work benefits. Many employers today have what is called EAPs (Employee Assistance Plans). These are supportive - and confidential (including from your employer) - services that can put you in touch with help. Therapy is one such area they can assist you with.