How to downgrade if ract-native version ?

[iam-human]

• Review the documentation: https://facebook.github.io/react-native
• Search for existing issues: https://github.com/facebook/react-native/issues
• Use the latest React Native release: https://github.com/facebook/react-native/releases

Environment

Run react-native info in your terminal and paste its contents here.

Description

Describe your issue in detail. Include screenshots if needed. If this is a regression, let us know.

Reproducible Demo

Let us know how to reproduce the issue. Include a code sample, share a project, or share an app that reproduces the issue using https://snack.expo.io/. Please follow the guidelines for providing a MCVE: https://stackoverflow.com/help/mcve

[iam-human]

how to downgrade react-native version

[react-native-bot]

    It looks like your issue may be missing some necessary information. Can you run `react-native info` and edit your issue to include these results under the **Environment** section?

If you believe this information is irrelevant to the reported issue, you may write [skip envinfo] under Environment to let us know.

[react-native-bot]

Please use Stack Overflow for this type of question.