Best free option for cron-like scraping process

Hello HN!

I'm looking for a cloud service that would allow me to launch a process every few minutes. This process would check something on a site (probably a few https requests) and then email me if certain conditions are met.

This would be for something personal so I'm looking for a free service if possible.

I'm looking at AWS lambda as an option as I'm fairly familiar with EC2 and lightsail...but I'd prefer a service that would either not ask for a credit card, or have some hard limits for spending. AWS horror stories are awful...

I already do this with a python script locally on my PC, but I'm looking to have this run on somebody else's computer (aka "the cloud"). I'm willing to learn any language or technology.

Thanks!!!