2. You have 2500 words limit in the About section. Write about all the projects you were involved in. Instead of just writing: "Experience in Mongo", it could be "Improved the system's performance by 30% by optimizing Mongo."
3. Again, add skills to each of your working history.
4. you can add the training courses or what you're learning for hot skills in the market.
5. Professional quality photo. You don't need to spend on getting a professional photographer. You can use AI tools to improve a selfie from your phone to look professional.
These will not get you the job, but will increase your appearance in search results.
But if I get my next job because I used an AI face fixer to get past the first hurdle of the culture fit, I just don't want to exist in this century anymore.