Multi-level menu added on my astra theme wordpress website

Hi,
I am trying multiple things and searching lots of video-related menus but not yet given me any tutorials I need.On my website I have created a menu

I want to create a multi-level menu like
Main menu: A, B, C, Sign in, Login
Under ‘A’: Menu1, Menu2
Under ‘Menu1’: 1, 2, 3, 4, 5

i have created this type of menu in WordPress, but I have a query in that,

1. when I click or hover on the main menu – ‘A’ then shows under sub-menu ‘menu1’ & ‘menu2’
   but when I click on ‘menu1’, it shows a sub-menu in the same location /place. (hide menu1 and show ‘1’, ‘2’, ‘3’, ‘4’, ‘5’ )
2. The sub-menu does not show on the mouse hover effect., it shows only when I click the sub-menu then it shows the same position. (when I click the sub-menu then its sub-menu hides and is replaced with another sub-menu in the same position )

I have attached screenshots for reference,
https://aerogcs.com/wp-content/uploads/2024/07/image-44.png

when I click on the first menu “Enterprise features” it shows other sub-menus like
https://aerogcs.com/wp-content/uploads/2024/07/image-45.png

please help me with that asap
Thank you

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