The decision of whether to spend your marketing budget on Google or Facebook depends on your specific business goals and target audience. However, here is a general overview of the pros and cons of each platform:

Google Ads

Pros:

Reach a large audience: Google is the most popular search engine in the world, so you can reach a large audience of potential customers.
Target users based on their search intent: Google Ads allows you to target users based on the keywords they are searching for. This means that you can reach users who are actively interested in your product or service.
Track your results: Google Ads provides you with detailed reporting so that you can track your results and see how your campaigns are performing.
Cons:

They can be expensive: Google Ads can be expensive, especially if you are targeting competitive keywords.
Requires ongoing management: Google Ads campaigns require ongoing management to ensure that they are performing well.
Facebook Ads

Pros:

Target users based on their demographics and interests: Facebook Ads allows you to target users based on their demographics, interests, and behaviors. This means that you can reach a very targeted audience of potential customers.
Promote your brand: Facebook Ads can be used to promote your brand and build awareness among your target audience.
Engage with your audience: Facebook Ads allow you to engage with your audience and build relationships with them.
Cons:

Organic reach is declining: Organic reach on Facebook is declining, so you may need to rely on paid advertising to reach your audience.
Can be difficult to measure results: It can be difficult to measure the results of Facebook Ads, especially if you are trying to track conversions.
In general, Google Ads is a good choice for businesses that are:

Selling products or services that people are actively searching for
Trying to reach a large audience
Able to invest in ongoing campaign management
Facebook Ads is a good choice for businesses that are:

Trying to build brand awareness
Targeting a specific audience
Engaging with their customers
Ultimately, the best way to decide whether to spend your marketing budget on Google or Facebook is to experiment with both platforms and see which one works best for your business.