why it take more than usual time to load a page .

Often it take more time then usual to load a Webpage, website however I'm not a firefox user for a long time I recently switched to firefox from chrome because it was better in terms of privacy.chrome take less time to load the firefox,I had checked my internet connection many times as we as the my phone, laptop settings to improve the experience of my browsing it won't fixed till now this only issue I found since I'm not usual user so don't know much , thanks for listening till here .