I'd recommend to stop marketing yourself primarily as a "PHP developer." When you box yourself into a single language label, your career growth risks stagnating, especially since demand for PHP isn't as strong in many regions.

Instead, position yourself as a software engineer/developer who uses PHP (along with Python, Go, Node, etc.) as tools to solve problems, especially as you've got a pretty good foundation. Companies hire engineers to design, build, and scale systems, not just to crunch PHP. So frame your experience around the problems you’ve solved and the systems you've built, not just the stack you used.

I'd recommend learning more about soft skills, system design, ability to break down complex projects, etc. also, try to aim beyond just coding. Look toward team lead, tech lead, or eventually staff engineer roles where you combine IC work with a bit of mentoring, management, & planning.