I am very beginner at wordpress. On my own i built a website on elementor pro. The website is ready, and everything works fine, but I need help with two things.

1. Mobile and tablet design

My website looks okay on desktop, but I want it to look good on mobile phones and tablets too. Is there an AI agent that can automatically fix the layout for different screen sizes?

2. Website speed

My website speed score is around 65, and I want to improve it to 90+. Is there an AI tool or agent that can help me do this?

Has anyone tried an AI tool that actually works for these tasks? I'd really appreciate your recommendations and experience.

Note: I am student, i was able to afford only domain and hosting, i can't afford to pay for both above task ( i have like $10 in my pocket ).....

Edit: This is the website i am talking about https://ikhlax.com/

if you have an opinion on current design, any changes i would love to get your feedback. its first website that i built....