Compute Engine Free Tier
Solution 1:
They haven't updated their calculator, if you pick their older f1-micro you'll see a checkbox to "Include Always Free usage in my estimate." The f1-micro is no longer free since August 31st, 2021, and the e2-micro free tier was introduced on August 1st, 2021.
Solution 2:
Yes the free tier is as you posted for compute engine. That is the cost for that particular setup, however your free tier credits will be deducted from that price so you will end up paying nothing. Note do not set it to 30GB when creating your disk, set it a bit less, like 28GB to avoid getting charged. Also note that static IP address are not included in the free tier.