Slow and difficult page loading

Hello community,

I’m Alexis, nice to meet you.
I’ve been working on WordPress sites for many years now. Most recently, I designed the website for my agency Palantis.fr.

I know that in terms of performance the site isn’t perfect:

• There are a lot of images (which I’ve optimized as much as possible)
• There’s a video on the home page
• I use a few plugins (see configuration)

I’m contacting you today to find out what’s going on with my site, and to get a clue to guide my research. Despite a site with a certain amount of content, I haven’t had any loading problems in the last few days.

The biggest event was the switch to WordPress 6.3, since which I’ve noticed some slowdowns on the site. Pages used to load in 2 to 3 seconds at most. Now, it takes much longer without having performed any other operations.

Would you be able to “scan” my site and provide me with some information?
Have you also experienced any slowdowns with the switch to WordPress 6.3?

Thank you in advance for your help.
Looking forward to hearing from you.
Best reagards.

Configuration :

OS:?Linux
Server:?Apache
Hostname:?palantis.fr
IP:Port:?82.165.83.178:443

Document Root:?/kunden/homepages/13/d470867821/htdocs/clickandbuilds/Palantis
PHP
v8.1.22
GD:?2.2.5
Memory Limit:?1?024,0 MiB
Max Script Execute Time:?30s
Max Post Size:?128,0 MiB
Max Upload Size:?128,0 MiB

MYSQL
v10.6.10-MariaDB-1:10.6.10+maria~deb11-log
Maximum No. Connections:?3?000
Maximum Packet Size:?64,0 MiB
Data Disk Usage:?17,2 MiB
Index Disk Usage:?1,8 MiB

PLUGINS
Disable "BIG image" Threshold
Email Address Encoder
Envato Market
Safe SVG
Salient Core
Salient WPBakery Page Builder
Say What?
Typing Effect
UpdraftPlus - Sauvegarde/Restauration
WP Statistics
WP-Optimize - Nettoyer, compresser, mettre en cache.
WP-ServerInfo
WPS Hide Login
Yoast SEO

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