Keep in mind that a Mac is inherently more secure than Windows, and even if it's no longer supported, you can still use it with an updated browser (Firefox, Brave, or others). To further increase security, you can use a paid VPN service and, ultimately, an antivirus. This should protect you from unpleasant surprises for many years to come.Drat! My 2018 Intel i7 1TB Mac Mini is still working flawlessly. But if it no longer is getting Updates, meaning Security Updates, then it can no longer be trusted to be connected to the Internet. And to me, a computer without Internet access, is no longer a computer.