How to Speed Up Magento 2?

Don’t be discouraged if your site scores low on PageSpeed or any other speed test. The score you see isn’t a direct indicator of performance, but it can give you a more objective view of what needs to be optimized. You also need to consider your performance budget. If you aim too low, you’ll lose revenue, so deciding what to fix is a matter of setting priorities.

Because your top priority is your customer (and potential customer) the overall user experience has to be top notch. A lot of the things we’ve mentioned require help from professionals that have seen and done it. Professionals know what to look for — like bottlenecks, lag, and resources that are limiting site speed.

If you are interested in a full article, read that: https://elogic.co/blog/speed-up-magento-2-store/