Recently got Telegram to maintain contact with some SPs (or their admins) because they weren't that inclined to WhatsApp. Looked at the "nearby" feature and enquired of a few "local" profiles that smelled of SW, all proved to be scams of one form or another. Local groups supposedly for communities to organise around social interaction or innocuous interests are all plagued by spam touting porn, cam, supposed sex work or illegal drugs and weapons.
ONLY reason to use Telegram here in the UK is for person to person contact with individuals you've already confirmed of interest either like Tinaservices by reputation or else an SP giving you their contact. Much like most other messaging platforms here.
Go to other countries where the genuine sex work culture has taken to the platforms seriously and you can find SPs more reliably. Best to read the Abroad forum (and other International punting forums) for the best wisdom as different platforms are popular in different countries/regions e.g. Line, WeChat, etc.