Front-end development performance testing tool

have you used any performance testing tools that are easier to use in the process of front-end development?
take a chestnut: pagespeed (. I haven"t used it. I tried to use it, but I can"t.)
on the Internet, it is said that the test results that can be achieved are as follows:

you can not only give a score (65thumb 100), but also tell you where the problem is, and then modify it according to your own. I was astonished at first glance, and suddenly found that I had little research on the previous performance test. I tried to use this extension, but in fact I failed. I installed it (offline) and used it, but I waited for an hour and the result didn"t come out.

how do you usually achieve this level of performance testing when you are developing? thank you very much for your advice.

Aug.20,2021

the suggestions in your screenshot are common sense, don't need to be tested, just need to learn.
the rest is that during the development process, you use the development tools that come with chrome as debug to see where the performance problems may lie.

MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b3d4d8-2c375.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b3d4d8-2c375.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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