Ask HN: Pre-seed/Series A startups- how much is your cloud services costing?

My clouds costs are slowly creeping up on me and wondering how startups manage their cloud services cost? What free alternatives does one rate highly? Is there a possibility to going back to buying our own servers to host our apps? Feel like that’d be cheaper as we scale but I’m not sure of the realities - we are almost running out of our free AWS credits and wondering if I should move to GCP with their free credits to prolong my bills