A completely free, cloud-based DAW that is excellent for recording vocals and light multitrack editing.
Since you cannot install Audition, here is what you can use for multitrack audio editing:
Adobe Audition is a resource-heavy, professional Digital Audio Workstation (DAW) designed for x86/x64 processors (standard Windows and macOS architecture). Chromebooks historically run on ARM-based processors (similar to phones) or lighter x86 chips, utilizing a lightweight operating system centered around the web browser.
Chromebooks are designed to run lightweight web apps and Android applications rather than the heavy executive files (.exe or .dmg) required by Adobe Creative Cloud.
Drainage Wakefield