I want to use Wrangler from Cloudflare, can I still run the project for free through Cloudflare Pages?
I would like to create my Website with wrangler because I think it would be a nice way to do it. The website will only display static information. Will it work, for free?
You can use Wrangler direct upload, yes: Direct Uploads · Cloudflare Pages docs
There are no extra costs for that, all static requests are still free & unlimited. Just keep in mind you cannot download your deployment back from Pages, and you need to upload all of the files each time. I prefer Github personally because of the integration, automatic deployments, etc, but Wrangler Direct Upload certainly works, and if it fits your use case better, go for it.
If you’re talking about using Wrangler with Workers, there is a free tier for them, but if you need more then the free tier and sign up for Workers Paid, it will cost you.