If you want to grow, and time and money constrain you, you need a digital marketing strategy.
Marketing tactics build upon one another. When organized thoughtfully, you can realize efficiencies and maximize results.
Conversely, when done haphazardly, you'll likely waste time and money with mistakes and rework.
Additionally, without a good strategy, you risk wasting effort to reach audiences who aren't interested in the products or services you're selling, or you reach your desired audiences but with unconvincing messaging. In either case, you've wasted time and money.