Opencage is pretty decent value if your use case fits within what it can do. It has some limitations (e.g. limited support for house numbers and commercial place names) but it has some redeeming features and a generous free tier and rate limits. If it's good enough, the price/performance/quality ratio might be hard to beat. If it isn't, there are more expensive alternatives.

Ed Freyfogle (the founder) is a nice person, very knowledgeable about all things geo, pretty approachable and co-runs the geomob podcast (worth checking out), associated meetups (worth going to). If you are unsure, get your free API key and just give it a try. His documentation is awesome and the API is really easy to get started with.

Disclaimer, Ed's a friend and I'm a user of his product.