Since we are talking about test cricket, the only knockout event Kohli lost as captain was the WTC final(in which the situation heavily favoured NZ as well). If you are referring to tough conditions as in SA 2022 and Eng 2022, centurymaker has provided context for that. Sure there are situations where Kohli’s pressure could have backfired, but mostly as evidenced by his record as captain it didn’t, and it is very convenient to say all tests India lost under Kohli was due to his poor captaincy. India also won crucial games overseas under Kohli, against SL in SL 2015 despite being 1 down( And this SL may not have been peak SL, but they had Herath, Mathews, Chandimal, Sanga(although in the last stage of his career), and at home, Border Gavaskar 2016-17 despite being 1 down. And Eng 2022(for 80% of the time), Aus 2018, the team did pretty well in tough conditions due to his intensity.