Anyone here can lodge this simple form and I'd encourage you to do so. Especially if you think this merger will substantially lesson competition and stifle innovation lodge a complaint: https://www.ftc.gov/enforcement/report-antitrust-violation
At a minimum, they will investigate this and make inquiries (typically within months) if they see a high volume of complaints.
2. It should include something similar the following (maybe a lawyer here, could help):
a. Adobe acquiring Figma may violate anti-trust laws.
b. These are the 2 dominate players in web design apps. There is very little competition elsewhere.
c. I am a user and once they merge there is no viable competitor.
Sent, thank you. I also made sure to mention the "consumer harm" (keyword) of forcing consumers to engage with Adobe's predatory pricing model ("annual subscription billed monthly" bs)