Never, ever, ever ever use your personal laptop for work. Never use your personal mobile for work unless you have MDM software.

No employer with a functional legal department would ever be okay with an employee using their personal devices for work (unless they have MDM software on the devices partition the work data).

Using your personal device(s) work for make them fair game for discovery in lawsuits, even after you have left the company. It is also generally a violation of state and federal laws and/or procurement contracts in multiple fields if you work in finance, health, or anything defense-related.

If an employer ever mandates that you use your own device for mandatory work-related functions, find a new job. It's the number one red flag that the company is a shit-show and indicates that there are a lot of other rules/regulations/etc that the company doesn't care about either.