How to join Quant firms for Trading Roles

Hi , I am a 2024 graduate from IIT and currently working as a Data Scientist , I have been trading since 1 year now and have found interest in trading roles and want to apply to quant companies (Optiver , IMC ,...) . I am fast with numbers , know decent probability and have been preparing for it , have applied , got tests(automated most of them) , got only into Optiver Behavioural and was rejected . Want to switch quite desperate ly for the comp obv as well as the work is interesting as Trading is something which I do have interest in . Any idea as to how to proceed , prepare further . Would be really Helpful