Do I need a good VPN for Windows?

My laptop is getting a bit old, and I am finding it harder to run modern software suites. I tried using a popular privacy program last week, but it completely slowed down my system boot time and caused my web browsers to freeze constantly. I really need a minimalist, well-optimized connection tool that focuses entirely on protecting my internet traffic without adding heavy visual elements or complex background services. Do you have any recommendations for older PCs?