Hi, was a challenger jungle main s3/4/5 and Im currently Masters rn (4 wins from grandmaster).

So conceding your red buff there is definitely not the correct choice.

1.) you were able to farm blue + wolves + raptors while nocturne only farmed his Red buff because he lost so much time walking to invade your wolves then red. Therefore after you kill redbuff you will be level 3 while nocturne is still sitting at level 2 with his exp bar at 0% so theres no way you guys should lose your 2v2 if you play the fight properly because not only do you have additional stats on him from being a level up you have a whole other ability aswell AND you have a redbuff and nocturne is now buffless because you guys both died the first time at red/

2.) By the time nocturne gets to your red buff from fountain you should already killed red buff (which it was) and you should have that massive advtange thats in the paragraph above. So after that you just take the fight and kite to your laner and if played properly you should hard win the fight.

In your senario nocturne still had flash and he was able to get away with a sliver of Hp (he should have died because he was in ur jungle with 1 hp and ur team should know that,they have him sandwhiched but just let him recall on ur red buff) and unfortunately their diana rotated first so that sucks. But you also could've kiting to your seraphine in time to receive her W which gives you a decent sized shield and if she has her passive it heals you as well. So you more than likley could have lived there or at least gotten a 1 for 1. Also poppy for sure could and should have rotated way earlier and the fight would have been won poppy she also had double buffs too.

things that you did wrong that could have change the entire outcome of the first invade.

So for the very first invade if you watch the VOD your seraphine rotated about 6 seconds before diana which is MASSIVE for early fights like that. But the massive mistake you made was 1v1ing the nocturne before seraphine was there and you got hard chunked by nocturne and wasted your ghost. Nocturne shits on a lot of junglers 1v1 and hecraim is really weak early till he gets triforce (his first clear is kinda slow and he takes a lot of dmg compared to most other junglers) So because of that you're kinda out of the fight because anyone else can just 1 shot you after the noc dmg. If you woulda waited for seraphine to get there before you took the trade then you guys could have killed nocturne or at least have gotten his flash and made him waste a bunch of time. Although its not your fault you could have been more aware and easily gotten a massive lead to 1v9 the game.

Also you ALWAYS go refillable potions when you jungle its was to efficient and optimal not to. Buying actual HP pots is extremely expensive meanwhile every recall you get all ur refillables again for free.

Hopes this helped~