npm ERR! ENETUNREACH when i try to install dependencies using " npm i "

Question

everything was working fine but yesterday when I try to create a new project using npx create-react-app appname OR try to run current project by installing dependencies ' npm i ' i face this error.

npm ERR! code ENETUNREACH
npm ERR! syscall connect
npm ERR! errno ENETUNREACH
npm ERR! request to https://registry.npmjs.org/body-parser failed, reason: connect ENETUNREACH 0.0.31.144:80   

npm ERR! A complete log of this run can be found in:
npm ERR!     C:\Users\(.log file address)

What I tried:

• Check your internet connection: working fine

• clear cache and Retry the installation: I tried but not working same error

• Firewall settings: I also enabled the public and private node.exe file from Windows Defender Firewall settings

• remove your package-lock.json: remove your node-modules folder and your package-lock.json file and run a fresh npm install command.

• reinstalling nodeJs: i just delete and reinstall nodejs 21.7.1 but no improvements

• Check npm Configuration: using 'npm config list' and found https-proxy = "http://8080/" someone suggest me to try npm config set proxy http://<proxy-host>:<proxy-port> then i use host=localhost and port=8080 by doing this i face error

  npm ERR! code ECONNREFUSED
  npm ERR! errno ECONNREFUSED
  npm ERR! FetchError: request to https://registry.npmjs.org/whatwg-url/-/whatwg-url-11.0.0.tgz failed, reason: 
  npm ERR!     at ClientRequest.<anonymous> and further errors.
  

  so I just set it back to npm config set https-proxy = http://8080/

Any ideas what's causing this and how to fix it?