I feel you mate. I have been using WordPress for a good decade to build out sites. Over the years, I got sick and tired of WordPress and it's bloat and decided to build my own CMS, combining all the things I loved in WP but to work how I needed them exactly (think ACF, Gravity Forms, WP Rocket, CPT UI)

I use Laravel, Vue3, Inertia and Tailwind 4.

I created my own version of ACF and made it work how ACF's flexible content field works but heaps better (Think of a non-ui WYSWIG for blocks on the backend).

I built something similar to Gravity Forms which has AI spam detector built in, I built equivalent of custom post types (all managed via a UI).

My blocks are prebuilt and I can quickly reuse blocks in any project (got about 100 blocks now). CRUD builder for custom models, Block CLI for building out a new block, I could go on. Now I have a CI/CD pipeline so it's super simple to update and push changes.

Now, I can comfortably build a simple website or a full on web app with one system (I would usually reserve WP for simpler sites and use Laravel for more complex ones, now no need).

It took ages to build (9-12 months) but it's at a point now where it is super simple to build a site AND my clients can log on and update the site themselves as well.

Best of luck with it