Are you measuring the DORA metrics for a start? Lead time to prod (time from commit to product, deploys per day, change failure rate, mean time to recovery.
Numbers in first two need to go up, and lower for 2nd two. In order to do that you need to automate your builds and deployments if you're not already. Eliminate any manual steps apart from maybe a checkpoint to deploy to prod.
You need to pay attention to what is happening in your deployment process. Ask questions on what stages are bottlenecking your lead time to prod, what's stopping you from deploying multiple times a day, why are your deployments failing.
You will quickly find you'll need a very good, maintainable test automation framework to speed up your regression testing.
Buy Dave Farley's book on building deployment pipelines (https://www.amazon.co.uk/Continuous-Delivery-Pipelines-Better-Software/dp/B096TTQHYM) to help you.
There's no easy option other than to engineer a solution and pay attention to the metrics.
All the information is free, plenty of open source tools to help you get there, but you will need time and people...
Here's a book that was published this year talking about pipelines: Continuous Delivery Pipelines: How To Build Better Software Faster https://www.amazon.com/dp/B096TTQHYM/