How to host my projects

I’ve been learning C# with .NET Core and would like to start hosting my projects online, everything I’ve done is locally so far.

I don’t THINK I need a Windows Server host, they seem to be expensive, I think .NET runs ok on a Linux server? But when searching for a .NET hosting provider I see windows everywhere.

I’m hoping to find as low a cost option as possible. It will be mostly for hosting projects to show potential employers / clients etc.

where do you generally host your .NET projects? I’ve seen AWS / Azure / Linode recommended, but I think costs can spiral quickly?