MongoDB Aggregation Query Optimization

I'm experiencing significant slowness with specific aggregation queries in my MongoDB, which is primarily used for transactions. While the database itself is 25GB with 400MB of indexes, profiling hasn't shed much light on the issue. I'm looking for an experienced MongoDB professional who can help speed up my queries. You’ll need to work on my instance via Anydesk. Ideal Skills: - Extensive experience with MongoDB - Proven track record in query optimization - Familiarity with transaction-oriented databases - Experience with Anydesk for remote work Please note, the issue mainly pertains to specific aggregation queries.