Firstly, the issue of fake accounts - there are tons of them. The only way I have found to trust a Telegram channel is to see its posts shared by another trusted channel.
Next, the scammers. Telegram seems to be doing fuck all to prevent bot accounts. I regularly get private messages from scammers. Delete and move on. Telegram lets you delete the convo from their end.
And of course change all of your account settings to private.
Informative channels to join:
DiscloseTV - https://t.me/disclosetv
Qtah - https://t.me/Qtah_17
Blueprint - https://t.me/BLUEPRINT_Q
Patel Patriot - https://t.me/patelpatriot
Brian Cates - https://t.me/drawandstrikechannel
Mike Flynn - https://t.me/RealGenFlynn
Kanekoa the Great - https://t.me/KanekoaTheGreat
Project Veritas - https://t.me/project_veritas
Covid Truth Network - https://t.me/covidtruthnet
George News - https://t.me/georgenews
BioClandestine - https://t.me/bioclandestine
Intel Slava Z - https://t.me/intelslava
Garrett Ziegler - https://t.me/GarrettMZiegler
Lisa Mei Crowley is over there as The Meitryx, as is IET (Twitter) for those who followed them when they were on Twitter
https://t.me/themeitryx https://t.me/InevitableET
One I've just picked up recently is a former Lt Col in Space Force. https://t.me/LtColMatthewLohmeier
Shit platform for replying to someone, so I just stick to lurking.
Lohmeier's page is a great pick!