Need help changing a bathroom drain plug at home

I'm looking for a reliable handyman in Ireland to replace a faulty bathroom drain plug. The current setup leaks slightly and the seal seems worn. I have a standard 1.5-inch drain with a simple screw-in plug. Please bring the necessary tools and spare parts, or advise if you prefer I supply them. I’d appreciate someone explain what needs to be done and provide a quick quote. Access is through a ground-floor bathroom; I can be flexible with timing within daytime hours. Prior experience with bathroom fixtures and water-tight seals would be ideal.