I Keep Finding Telegram Channels With Fake Members. How Do Experienced Marketers Verify Traffic Quality?

I am new to telegram advertising and recently started exploring different channels. The biggest challenge I am facing right now is identifying which channels actually have a real audience.

Challenges I am facing:

• Many channels show a number of members but i am not sure if these members are real or bought bots.
• Some channels seem to have engagement on a few posts but I do not know if this engagement happens all the time or if it is fake.
• Channel owners share pictures of views and clicks. I am not sure if I can trust these proofs.

I would like to ask from experienced marketers about

• What signs indicate a fake Telegram audience?
• Which analytics do you check before advertising?
• Are there trusted marketplaces for Telegram ads?

I would really appreciate it if there is someone who can help me to deal with the above issue.

Telegram is full of bots and so fake members and fake engagements.
Use telemetr.io and tgstat to analyze the telegram channel stats.
Use official telegtram ads for marketing to prevent getting scammed. Telegram is the hub for scammers. What else do you expect from channel owners.