Best software to create survey/questionnaires with?

I am in the process of creating a screener survey before my interview.

I would like to know what online software is available, preferably for free to create a screener survey? I could create a form myself, for example in WordPress and store the details myself that way, but wondered what other tools are available.

In terms of consent, I will need to add some terms etc and a GDPR option.

For the screener I would probably be having around 10-15 questions.

Any suggestions would be great, thank you!