But I am thinking recently that if the block size is increased, more transactions can be processed and the mempool will not be congested.
In a perfect world, yes, but from what we've seen in recent months this would only lead to larger Ordinals Inscriptions rather than an increased transaction throughput. Maybe someone can correct me if I'm wrong, but if I'm not mistaken the current congestion is largely due to Ordinals, rather than regular transactions.
TBH, sir the inscriptions are just the bubbles, the inscription wave was crazy but their actual production is zero, and those who are minting these inscriptions are really not well aware of the DEFI ecosystems and Bitcoin network they are just seeking some temporary profits Rather than deploying a full fledge business.
In simple there's nothing need to be worried about for the overhyped bubble of the inscriptions they are going to be dead sooner they we are expecting.