My wife is Irish, and they started the removal of plastic bags over 20 years ago. It was carefully phased in over time. It led to a 90% reduction in plastic bag use [0]. They also weigh your trash (in Dublin, anyway) as a means of cost pressure to reduce waste and encourage recycling. It is stated to have reduced waste by 50% [1].
[0] https://www.irishenvironment.com/iepedia/plastic-bag-levy/ [1] https://www.irishtimes.com/business/economy/why-it-pays-to-c...