Do Telegram bots employ end-to-end encryption for secure chats?

Are Telegram bots implementing proper end-to-end encryption? As I consider deploying a personal bot on self-hosted hardware, I seek assurance that private communication remains securely encrypted.

telegram bots dont use full e2e encryption. they rely on server-side encryption which isnt the same. if secure chats are a must, extra measures or other platforms might be needed