One of the significant benefits of microservices is that they scale more efficiently than monoliths. Given the same hardware infrastructure, you could theoretically be able to get more performance out of microservices than monoliths.
In practice, the benefits are not that straightforward. Microservices and related helpers also provide overhead that for smaller-scale applications may be less performant than an optimal monolith.
Remember that even if something looks good "on paper," it doesn't mean it will fly. If you want to base your architectural decisions on scalability or performance, it is better to prepare calculations and experiments. This way, you'll act based on data, not just emotion.