Psychotherapist in the UK here. I cannot stress enough that many of these services are quite predatory both on the therapist and clients. Additionally many do not vet their therapists properly.
I don't know where you are in the EU but your country should have regulating bodies. Here in the UK we have BACP, BPS, COSCA etc. All of which have online directories that let you search by speciality, filter for online/in-person etc. In the UK (and I've heard this is true in some other places in Europe but not sure where) you do NOT have to be qualified to call yourself a therapist or counselor so going with someone outside of these regulatory bodies often means you are doing therapy with someone that did a weekend online course. It is also why these online services are full of people you don't want to be working with.
Before COVID, in the UK we were required to have specialist additional training to work via phone/online but since COVID it's a bit of a wild west. It is substantially different working online than in person - that can be a very good thing... But it can also be a very bad thing too.
My advise is find a regulatory body, search their directory and look for people who specialize in exactly what you want to work in. Many will tick a box as one of 100 things they can work with - ignore those and look for people that in the description talk about neurodiversity etc.
Oh and finally, good practice is to offer clients a 15-20 min call so you can explain how you work and help them get an idea of if they'd like to work with you. Take advantage of this and talk to 2-4 people first before picking someone. The number 1 metric for positive outcomes in therapy is how well you connect to your therapist, so don't compromise on that.
If you would like more pointers feel free to ask, I don't want to overshare info that isn't relevant.