You may fairly take a stance, but you cannot manufacture easier conditions.
Plain-language guide · Rule 8.1. Use the current official text and your round’s Local Rules for a ruling.
What to know
Do not press grass down, bend branches, or otherwise improve the lie, swing area, or line of play in a way the Rules prohibit.
On the course
If branches block your swing, choose another shot or an allowed relief option instead of breaking them.