Facing an error while creating strapi

warning @strapi/strapi > @koa/router@10.1.1: **IMPORTANT 10x+ PERFORMANCE UPGRADE**: Please upgrade to v12.0.1+ as we have fixed an issue with debuglog causing 10x slower router benchmark performance, see https://github.com/koajs/router/pull/173
warning @strapi/strapi > @strapi/types > @koa/router@10.1.1: **IMPORTANT 10x+ PERFORMANCE UPGRADE**: Please upgrade to v12.0.1+ as we have fixed an issue with debuglog causing 10x slower router benchmark performance, see https://github.com/koajs/router/pull/173
warning @strapi/strapi > koa-body > formidable@1.2.6: Please upgrade to latest, formidable@v2 or formidable@v3! Check these notes: https://bit.ly/2ZEqIauwarning @strapi/strapi > @strapi/admin > fork-ts-checker-webpack-plugin > memfs@3.6.0: this will be v4
warning @strapi/strapi > @strapi/admin > webpack-dev-server > webpack-dev-middleware > memfs@3.6.0: this will be v4
warning @strapi/strapi > @strapi/plugin-email > @strapi/provider-email-sendmail > sendmail > mailcomposer@3.12.0: This project is unmaintained
warning @strapi/strapi > @strapi/plugin-email > @strapi/provider-email-sendmail > sendmail > mailcomposer > buildmail@3.10.0: This project is unmaintained
warning @strapi/strapi > @strapi/generators > plop > liftoff > findup-sync > micromatch > snapdragon > source-map-resolve@0.5.3: See https://github.com/lydell/source-map-resolve#deprecated
warning @strapi/strapi > @strapi/generators > plop > liftoff > findup-sync > micromatch > snapdragon > source-map-resolve > resolve-url@0.2.1: https://github.com/lydell/resolve-url#deprecated
warning @strapi/strapi > @strapi/generators > plop > liftoff > findup-sync > micromatch > snapdragon > source-map-resolve > source-map-url@0.4.1: See httwarning @strapi/strapi > @strapi/generators > plop > liftoff > findup-sync > micromatch > snapdragon > source-map-resolve > urix@0.1.0: Please see https://github.com/lydell/urix#deprecated
error An unexpected error occurred: "UNKNOWN: unknown error, unlink 'C:\\Users\\bytea\\AppData\\Local\\Yarn\\Cache\\v6\\npm-browserslist-to-esbuild-1.2.0-5c5b9ca73106da02e0168007396c4ec4c1e6d643-integrity\\node_modules\\browserslist-to-esbuild'".
TypeError: Cannot read properties of undefined (reading 'addBreadcrumb')
    at C:\Users\bytea\AppData\Local\npm-cache\_npx\f5b733dbc92df62b\node_modules\@strapi\generate-new\dist\utils\usage.js:67:28
    at Array.forEach (<anonymous>)
    at captureStderr (C:\Users\bytea\AppData\Local\npm-cache\_npx\f5b733dbc92df62b\node_modules\@strapi\generate-new\dist\utils\usage.js:66:14)
    at createProject (C:\Users\bytea\AppData\Local\npm-cache\_npx\f5b733dbc92df62b\node_modules\@strapi\generate-new\dist\create-project.js:136:41)      
    at runMicrotasks (<anonymous>)
    at processTicksAndRejections (node:internal/process/task_queues:96:5)

Tried downgrading my node from 18 to 16 & 14 but got same error.

I would recommend you to use LTS node version, as Strapi suggests that.
You can find the available LTS node versions by running the following command: nvm list available then select one version between 18.x.x and 20.x.x and install it. Finally, make sure to use that version by writing this command nvm use vx.x.x where x.x.x is the required version.

Hope that solves your problem!