go to the browser setting, find extension or chromestore, and search vpn extension, there are plenty of options, check the review, and pick the one that suit you, once you install, just follow the instruction, it is usually free, don't need to pay unless you are heavy user.

sorry, I haven't used chrome for a long time myself, I'm using firefox myself

alternative way, go to

https://plainproxies.com/resources/free-web-proxy

and copy paste my tiktok site to the browse bar