The US used to forbid prescription drug advertising. That seemed to work.
Ads for liquor, marijuana, and gambling are prohibited in many jurisdictions.
The FCC once limited the number of minutes of ads per hour on the public airwaves. That limit was below 10% of air time in the 1960s.
The SEC used to limit ads for financial products to dull "tombstone" ads, which appeared mostly in the Wall Street Journal.
A useful restriction might be to make advertising non tax deductible as a business expense. That encourages putting value into cost of goods sold rather than marketing.
It would be very unpopular with the people I’d imagine.
The total amount of consumer products that can be sold is bounded by consumer income. Advertising mostly moves demand around; it doesn't create more demand, at least not in the US where most consumers are spent out.
Think of taxing advertising as multilateral disarmament. Advertising is an overhead cost imposed on consumers. If everybody spends less on advertising, products get cheaper. Tax policy should thus disfavor zero-sum activity.