Need help unblocking kitchen sink drain

Hi, I'm looking for someone experienced to unblock my kitchen sink. The water is draining very slowly and sometimes not at all. I've tried basic methods like using a plunger and drain cleaner, but nothing has worked. Ideally, I need someone who can come with their own tools and fix the issue quickly. It’s a small kitchen sink in a rented apartment in Dublin. Please let me know if you have experience with this kind of job. Thanks!