INP issue: longer than 200ms (mobile), who can help me resolve it, pls

I noticed ads barely gets on my website despite being approved by google adsense, after many months of checking and all, I recently discover that all the links on my websites via search console says they are poor (poor urls) after checking the Core Web Vitals. Please, who can help me fix.

I have zero knowledge about what to do or how to go about it. I will be grateful if I can get help from this platform. Thank you

I was expecting google ads (nothing less than 5) on each of my web pages, but it keeps showing just one or nothing. I have done everything I can do, but it’s not improving till i found out all my urls were ranked poor by google search console Core Web Vitals