What is the best CMS to manage websites?

Question

CMS

Problem. I have three sites that I deal with personally.
All sites on Joomla. Hosting nic.ru.
All three sites on the same web server.
Previously, everything was fine, but lately any edits (new materials, menu items) have led to the
inoperability of the site. When entering the admin panel, an error 500 occurred.
Sometimes the site lay down for a week.
All three sites on the same web server.
The site was on joomla 2.
I tried to rearrange the joomla.
Laid down the first site. Or rather, his admin.
The support service advised me to switch to a new tariff, add RAM.
Changed the tariff, did not help.
Their advice to contact the system administrator is touching :)
I reinstalled Joomla and changed the template, the second site crashed.

Knowledge in html, css only basic.
I used to cope, but now the problems are more and more complex, I don’t have the strength or time anymore.
In short, you need to transfer all sites to a modern platform.
I want to move to another hosting and change CMS. Joomla has
been buggy lately. Hosting slows down and eats money.
Direction of two sites - printing, stamps, polygraphy. (we want to make a landing page and a catalog with a portfolio)
And one website - legal. services.
What do you advise?
Is it worth changing hosting and cms?
What solutions exist for self-creation and support of the site.

Answer 1

buy a subscription, put vestacp, and put anything on top of it

Answer 2

I would suggest you CMS WordPress for all three sites, as well as change the hosting "I can tell you the name" if you want

Answer 3

There can be many reasons. Freelance order.
Among the free solutions, you can try changing hosting.

Answer 4

Joomla is an excellent CMS and by itself it should not fail and slow down. Look at the logs, conduct an audit - what creates a load on the server, what queries take a long time to complete, etc. Why go to extremes at once - to WordPress?

Answer 5

And Joomla - well. And WordPress is fine.
In my opinion, you screwed up somewhere with the transition to new versions.
As an option, the new Joomla requires php not lower than 5.4... And Joomla 2.5... - 5.2
That's the 500 error for you.
Changing the hosting may or may not help if the same rake happens again.
Alternatively, they could plant malicious code that generates the load.

Answer 6

100% the problem is in the PHP version - put pressure on the hoster, let him update or transfer you to another server...