Hi Paul, and welcome!
Great job taking the initiative to join the forum and start learning more - it can feel like a lot to take in at first, especially when you're already active and trying to figure out how things like carbs fit into your lifestyle.
As a keen cyclist, you're in a really good position - regular exercise like that can make a big difference in insulin sensitivity and glucose management. The tricky bit, as you’re finding, is balancing that with fuelling your rides properly, especially around longer or more intense sessions. You’re definitely not alone in navigating that - lots of people here have been through similar and are happy to share what’s worked for them.
You might find that pre-ride or mid-ride carbs are perfectly fine as long as you’re thoughtful with your overall intake and timing. I suggest you start by looking at your daily/weekly menu and seeing which choices are most 'carb-heavy' and how you could replace those? Those changes would need to be something you could stick to, so look for something that won't take the joy away from food and would still 'fuel you' for your rides.
Glad to have you here - don’t hesitate to ask questions as you go. You're doing really well by getting ahead of things now.