Google Adwords - Potential Clock Fraud Review

I have been running Google Adwords on and off since 2018 with some success. In 2023 a landing page I had been using since 2020 suddenly stopped working so it has been updated. I feel it's a well designed, simple design that should be converting.

I am getting 5-6 clicks a day for the last 3 weeks but no calls. I am beginning to suspect click fraud as in the past I've bene guaranteed good leads from Adwords and all of a sudden it no longer works

The business is a Quantity Surveying Consultancy