You can ask your admin to change the greeting language for everyone in your organization. Your admin should see this topic for instructions: Change the default language for greetings and emails.
27. Hi, It’s [your name] of [your company]. I’m in a meeting at the moment. Please leave your message and contact information, and I will get back to you within [realistic timeframe]. Thank you for calling.

"We designed the default voicemail greetings to all users to standardize the feature across all Microsoft services." through. First, having a standard voicemail greeting cannot possibly work for someone who uses Skype for business. Or whose computer is set up to work in one language but expects callers using a different language.
I have a confession to make: I haven’t recorded a new voicemail greeting since 2014. In the past four years, I (hopefully) have become more articulate, poised, and self-assured. But hear my voicemail recording, and you’d think I was still new to the work world, a little unsure of myself — and probably not an authority. Obviously I need toupdate it. And if you haven’t changed your voicemail greeting in over a year, you’re likely in the same boat. After all, a professional voicemail recording boosts your credibility, makes you seem more competent, and encourages whoever’s listening to it to continue the relationship. A relatively unprofessional one — like mine, for instance — does the opposite: It encourages prospects, recruiters, and potential connections to run in the other direction. With that in mind, I’ve written 18 unique voicemail greetings for every situation. Pick your favorite, practice a few times, then record your new voicemail.