Press FOV settings in Minecraft and lower the Field of View
Use OptiFine and hold the zoom key if installed
Use a zoom mod such as Zoomify, Ok Zoomer, or similar
On Bedrock Edition, use a resource pack or mod that adds zoom
On some laptops, hold Fn and press the zoom key if function keys are reversed
Use a spyglass in-game for temporary zoom
Change your mouse or keyboard keybinds if the zoom key conflicts with another action