Longer, less complex phrases are more secure than shorter, more complex phrases. (But longer, complex phrases are best!)

Good → "1ntErm3d!&ry"← Single Password, mixture of letters and numbers and special characters. Length=12 characters. Better → "MunchingSquareLentils" ← 3 word Passphrase, memorable, personal, hard to guess. Length=22. Best→ "Munch!ng*Squ4r3&Lent1l5" ← Memorable passphrase, mixture of letters, numbers and special characters. Length=24.
↑ Please do not use these specific phrases ↑