The verdict
If you spend on Google Ads or want audience building for paid campaigns, I'd pick Google Analytics. Nothing else ties the Google tools together as tightly, and it is free. Accept the learning curve and set aside time for conversions and events.
If your questions are where traffic comes from and what converts, and you want the whole team to read the numbers, I'd pick Plausible. It is a good fit for marketing sites, blogs and landing page sets. Be honest about the ceiling. Plausible has no ad platform features and no deep user journeys, and its price follows pageviews. Google Analytics has more depth, but funnels are basic next to a product analytics tool.