How to Improve Website Loading Speed Without Advanced Coding Skills?

Hello everyone,
I’m currently working on improving the performance of a small website, but I don’t have advanced coding skills. The website loads a bit slowly, especially on mobile devices, and I would like to optimize it without making complex changes to the core code.
I have already compressed images and removed a few unnecessary plugins, but I’m wondering what other practical steps I can take. Would using a CDN make a noticeable difference? Also, are there any beginner-friendly tools that help analyze performance and provide clear suggestions?
I’d really appreciate advice on simple and effective methods to boost loading speed while keeping the website stable and user-friendly.
Thank you in advance for your recommendations!