The phrase "low ratings" means that something, like a TV show or a product, has not received many positive reviews or has not been liked by many people. Full definition
Many continue to expect a continuation of low rates of inflation and low interest rates, despite quite low unemployment rates in a number of countries. (rba.gov.au)
You can even negotiate for lower rates for consolidating your debt and benefit paying less. (personalmoneyservice.com)
Currently, capital is taxable at lower rates of tax than income. (politics.co.uk)