for distributed tracing in microservices, what's your go-to

Hey everyone, I'm getting back into system design and wanted to ask for your thoughts on distributed tracing. When you have a bunch of microservices, following a request through them can get pretty complicated. What tools or methods do you think are best for understanding what's going on? Are you mainly using OpenTelemetry, Jaeger, Zipkin, or maybe something different? I'm really interested in what people find works well in real-world situations, no matter the size or how complex the system is.