If you are using Telegram Desktop based Mac Apps (Bettergram, Desktop, Kotatogram, iMe, Telegreat, Telegram Lite, Desktop Beta Apple CPU compatible or not), then you need to change at least one option
Allow user to choose font and font size · Issue #90 · telegramdesktop/tdesktop · GitHub
Fix tiny Khmer font size on Telegram for desktop - Commerce Cambodia
Add a setting to change fonts · Issue #26755 · telegramdesktop/tdesktop · GitHub
How to Change Font in Telegram Desktop - YouTube
Telegram Text Formatting: Tips, Font Tricks, and Shortcuts | SendPulse Blog
Telegram Text Formatting: Tips, Font Tricks, and Shortcuts | SendPulse Blog
How to Change Text Size in Telegram on Windows - YouTube
Telegram Desktop reaches version 1.0 – and it's BEAUTIFUL
How to Change Text Size in Telegram on Windows - YouTube
Fix tiny Khmer font size on Telegram for desktop - Commerce Cambodia
Telegram-desktop gets borders when using kvantum in Qt6 - GNOME - Manjaro Linux Forum
How to Change Font size Khmer on Telegram Desktop 2019-2020 | របៀបផ្ដាស់ប្ដូរ Font Size on Telegram - YouTube
Fix tiny Khmer font size on Telegram for desktop - Commerce Cambodia
How To Change Font In Telegram Desktop - YouTube
How to use dark mode and custom themes in Telegram for Android and desktop - Neowin
Telegram Text Formatting: Tips, Font Tricks, and Shortcuts | SendPulse Blog
How to change Font on Telegram for windows (Update 2023)
Telegram desktop now supports text formatting using keyboard shortcuts