Which Elgg Version Is The Best For My Website?

Which could be the best options to keep the website running safe (in the cloud system) without via Composer.?
I see you keep putting out many 4xx versions and also 3xx versions too. Which Elgg version is the best if my website has v3.3.20 right now.
The plugins that my site has are working fine but not perfect or smooth (I must deactivate the theme Vision "Theme" in order to make an "Upgrade", otherwise it is not possible.
Considering all of that and avoiding not breaking this site, the administrator thinks that you are showing to ways:
Continuing with versions 3xx or switching to versions 4xx.
The list of plugins installed in this website are:
Blog
Bookmarks
Front Page Demo
CKEditor
User Dashboard
Diagnostics
Elgg diagnostics tool
Discussions
Embed
Site Pages
File
Friends
Friend Collections
Garbage Collector
Groups
Invite Friends
Likes
Login As
Members
Message Board
Messages
Notifications
Pages
Profile
Reported Content
Site Notifications
System Log
Tag Cloud
User Validation by Email
Web services
QuickLinks
Comment edit permissions
Questions
Age Restriction
Favicon Override
IP Tracker
Profile Manager
Auto Sitemap
iZAP Videos - revised edition by iionly
FreiChat
Tidypics
http:blacklist
Cookiebanner
Avatar Wall
Autosubscribegroup
Ads Rotator
Spam Login Filter
The Wire
Captcha
Vision Theme
Blog Tools
The Wire Pro
Advanced Comments
Target Blank
Spam Analysis

The SERVER is:
PHP version7.4.22
I appreciate your suggestions.
Thank You.

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