Get an account and use the free tier - especially the serverless combo (API Gateway + Cloud Functions + Cloudant (Document DB only ) or in AWS (API Gateway + Lambda + DynamoDb (Document+ key/value))
https://www.forbes.com/sites/adrianbridgwater/2021/02/18/ibm-developer-lead-what-software-does-next/?sh=5bbebc83745a
https://developer.ibm.com/
https://quickscout.ai