If you’re being served Trading 212 and eToro ads on your probably already adtech fingerprinted browser/device, it may be because you’re spending a lot of time on community.freetrade.io. You don’t have to be a webdev to find out using a free search engine that freetrade.io uses tech such as Facebook (Connect widgets), Google Analytics, Twitter Bootstrap (framework), Google Fonts API, Google Tag Manager, TrustPilot (widget), Doubleclick (Google), Hotjar (behaviour analytics). The Community uses google-analytics.
FT also seems to be using Cloudfront and Cloudflare: