Firefox is installed, but cannot found in Activities

snap
1

Ubuntu 22.04.5 LTS shipped with the workstation when purchase. I think Firefox browser is installed with snap because

  1. Output of dpkg -l|grep firefox is

ii firefox 1:1snap1-0ubuntu2 amd64 Transitional package - firefox → firefox snap

  1. In Settings → Default Applications, Web shows “Firefox Web Browser”.

But FireFox does not show in Activities.

What is the matter? How to fix it (have FireFox browser show in Activities)?