I'm new to using a VPN and I'm unsure how to tell if it's working properly or what I should look for regarding security and performance. Can you explain how I can check if my VPN is working as intended and what factors to consider regarding security and performance? My tech-savvy elder brother explained that there are a few ways to check if a VPN is working correctly, such as checking the VPN status icon or indicator on my device, running a leak test to see if my IP address and location are concealed, or using a website that tests VPN Poland connectivity and speed. He also suggested that I research and read reviews from other users to find a provider that meets my needs and offers reliable and secure VPN connections. Would anyone like to add to this? Or any other way out to fulfill the requirements appropriately?