You need to install these:

go get google.golang.org/protobuf/cmd/protoc-gen-go

go install google.golang.org/protobuf/cmd/protoc-gen-go

go get google.golang.org/grpc/cmd/protoc-gen-go-grpc

go install google.golang.org/grpc/cmd/protoc-gen-go-grpc

go get github.com/grpc-ecosystem/grpc-gateway/v2/protoc-gen-grpc-gateway

go install github.com/grpc-ecosystem/grpc-gateway/v2/protoc-gen-grpc-gateway