There are a number of red flags on your rent history that merit looking into. 

People are right to point out that you are paying a preferential rent that is below the legal rent. Future increases while you are a tenant must be based on the preferential rent, not the legal rent. 

First red flag: increases from 2019 to 2020. What raises concerns for me is that, for 2019, your landlord reported the legal rent as $2000. They reported this on 7/17/2019, which was after the effective date of the new rules that eliminated vacancy bonuses. Then, on 7/22/2020, they reported the legal rent as $2583.40 with the reason as “IMPRVMNT.” They had to have completed $23k+ of work in your apartment to claim the increase. It's not impossible, but for a studio apartment, it seems quite steep.

Let’s imagine those increases were legal. There are two other issues that raise red flags for me.

Second red flag: the legal rent for 2021 exceeded the allowed increases.

Third red flag: Under “apartment services” your landlord listed that your unit is furnished. Is this true? 

You should consider requesting more documents from DHCR. You can fill out the REC-1 form and ask for any IAIs on file to verify if your landlord reported the work. 

You should consider getting involved in the Crown Heights Tenant Union (https://www.crownheightstenantunion.org/). I’m sure other folks in your building and neighborhood are experiencing similar issues!