If you are in doubt still about your website performance a more true method of testing it would be with a site called rankwatch, this is a webpage analyser, some things on there are great, just remember ultimately the most important parts of a page are the title and description length, for a title you want to use less than 65 spaces ( not just letters as a gap between words counts as well ) and the title description is best below 150 spaces, if you can't do this then try to minimise the above as best as possible, you will get a more realistic result with your square online site speed as well, as rankwatch finds the host server unlike google page speed or GTMetrix which uses their own CDN based servers to find the nearest one from your chosen destination, which should show a result of anything between A+ to A- for most Square sites speed which is a more realistic outlook of your sites speed, anything else on rankwatch is ok to look into but is not really needed as it still falls into some of the problems other webpage analytic sites have with CDN based sites, so nice to look into but not really anything to worry to much about as there will always be some areas these type of sites will say are a problem for you because they want you to pay for their use in a more ( so called ) detailed way, but really the above mentioned is all you need to know if your site is really doing the best it can to get higher on search engine results, if you want to go further the best way of keeping a check on your overall performance is not to go with google analytics as alot of people will tell you to do ( it's just the easy thing to say to sound like they know what they are talking about ) but go on google search console, join up, link your site to it and wait for google to index your whole site, you will need to put an xml sitemap on for google to index, just go to sitemap category on google search console and enter your sites name followed by /sitemap.xml, so it looks like this when you add it https://www.yoursitename.co.uk/sitemap.xml, and you're all set and ready to be fully indexed by google, it can take around 5 to 10 days for everything to get going and can take longer to get full results like performance traffic etc to be added, but just leave it to do it's own thing and between a month to 2 months you will start to see it all come together, you will be able to see where your pages are ranked on google, tips on how to improve everything with your site if you want, once you submit the sitemap xml you don't need to do anything else like keep submitting the sitemap again and again, google will do it every few days and update anything new that has been added to your site, the longer you leave the sitemap alone the more impressions you will get and the quicker your page speed will become over time (albeit only slightly), using both rankwatch and google search console is without doubt the best 2 tools you can use to check your sites health and speed the most accurately and you don't need so called experts trying to say there is something wrong with your site when in reality there more than likely is not ( but if there is google search console will tell you and explain how to fix these issues yourself, sorry for the long added reply but this is something that a lot of people do seem to have trouble with and needs to be explained in simple terms
