Modify the platform parameter tgWebAppPlatform to android so that it allows you to run Telegram WebApps in the web version of Telegram.
To use this script, install a user script manager (e.g. https://www.tampermonkey.net/), then go to https://github.com/hongshibao/tg-webapp-platform-modifier/raw/main/platform-modifier.user.js, and it will prompt you to install.
Telegram WebApps may also check the User-Agent. If you are using Chrome, you can press F12, click the device toolbar, and then select a suitable mobile device:
Another way to solve the User-Agent issue is to install Chrome User-Agent related extensions, e.g. User-Agent Switcher and Manager, and then config them to use Android related User-Agent:
The Javascript code is mainly from vherasymenk0/telegram_webApp_platform_modifier repo. Thanks for the author.