We can see from the charts that the top two sectors in the startup space are FinTech and SaaS and the highest valuation sector is FinTech. What this trend is showing, check these facts:
The startup funding is shifting from FoodTech and EduTech towards FinTech and SaaS-based startups. Business acumen says where the money flows, you should open your shop there.
The promising India FinTech market is expected to reach $1 Tn in throughput and $200 Bn in revenue by 2030. The government also has a heavy push on the FinTech sector to achieve financial inclusion goals.
The government is easing the rules and regulations to promote the FinTech sector. The largest digital ecosystem in India and it is still growing at a faster pace will boost the FinTech sector in coming years. With a fintech adoption rate of 87% against the global average of 64%, India is one of the fastest-growing fintech markets in the world.

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REFERENCES:

https://www.forbesindia.com/article/explainers/unicorns-india-list/85309/1

https://www.ey.com/en_in/financial-services/how-is-the-fintech-sector-in-india-poised-for-exponential-growth

https://www.drishtiias.com/daily-updates/daily-news-editorials/india-s-growing-fintech-market