Should WordPress Come With Warnings/Plugins

I have a WordPress website now 15 months and I am here to report unreliability issues and ask if WordPress Should come with warnings for use / prior to starting. ?

I have had three update problems on Form 7 that made it unsubmitable.
a) A calendar on the form used to select a commencement date, would not work on Apple/Safari (a required field on the website).
b) Credit card form 7 would say that the 3 digit verification number was too long when 3 digits were entered.
c) Captcha would not work. It did not show the pictures – such as click all the ones with the busses on them – it just came up with a box to click on, then once clicked there was a grey circle with a small ball going around and then after about 15 seconds it would say verification failed (while we got the information, and the user got an e-mail of this). One person sent the form to us 7 times. Not a good look to have this happen. My plugin firm remedied for now by removing captcha, they might have given up. Works now! Yet a week later the home page was not showing and the plugin firm blamed that on cache.

Each time there is an update, there is a message on the WordPress Console that the providers represent that it would work 100% (really WordPress). These three errors above were not us proactively finding problems, but problems reported by people trying to use the form. In comparison, I have an htm website with a complex form that never has issues – just always works. Perhaps all the WordPress updates are good for website designers who want the latest and greatest whenever they start a new website, but for people who have an existing website and who don’t make many changes…

Then I had an “Ocean Extra” update fail take out my website (only showed portions of pages) – seems like I tend to have/notice problems before a weekend so a fix seems to be multiple days away while I get website support onto it. At least with the Ocean Extra update (and why are they updating that if I like the look of the website?) WordPress e-mailed that a fatal error occurred on update of Ocean Extra plugin.

Question: Should I pay monthly for a plugin update service – to help keep the form 7s/website up under an expedited service level? Then that should be a warning. If going with WordPress, then should pay for a monthly update service. I started looking for plugin support Elementor and found a few firms offering that. Why is that WordPress? A sign of issues with plugins? Or, maybe I should turn auto updates off, but I think that could catch up with me if I leave it that way for months/years.

Here is a nasty one. I had website load problems on and off (mostly off) since the webpage was launched. More recently it manifested itself as perhaps every 4th page clicked, and it seemed to be one of my Form 7s but could be any page, that the page would take 19-23 seconds to load, and had problems of mobile version hanging. Here is how I was faked out on this: 1) while one web firm/maybe two firms was saying to change who I was hosting with, I had my other htm website hosted with them with no load problems whatsoever; 2) I called the major hosting provider (in Australia) several times over the past year and they were blaming the website itself, not them! Recently I changed WordPress hosting and, bingo, all good.
So should WordPress provide warning about hosting along the lines: WordPress takes up more hosting requirement than html/htm websites, and if you have load problems you may want to consider changing hosting providers. The old hosting provider could have figured this out and upselled me to a different platform.

The page I need help with: [log in to see the link]