Why does college seem to get lonelier as you get to 3rd 4th year?

i personally had a GOATed group of friends till 2nd year but uske baad idk what happened.
Ever since 3rd year has started it has been real lonely...we didn't have a fight , they just stopped caring...and it's not like they are focused on padhai or placement tabh bhi it explains ki why they stopped talking
ek toh bc padhai itni tough hoti jaarhi semester by semester, placement interns ki tension, ghar ke finance se related kalesh and now this.
It gets hard to bear sometimes, sara time bs pressure bana rheta h

rn i see everyone with their buddies or gfs bfs doing garba night on their insta stories or going on trips or other college's events. me vaise bhi ye sab nhi krta tha like events and trips me itna jana but i used to have my buddies, we would be on call till late at night...talking , roasting each other, gaming and most of all we would encourage , motivate and help each other to study too aisa nhi tha ki sirf bakchodi hi krte the
now all gone ptani kiski nazar lagi h

meri toh bandi bhi ni ban rhi despite having all generic qualities girls like...being 6ft tall, long and wavy hair, decent physique (been training nearly 3 years)...agar friends ki yaad se dhyan hatega toh bc clg me couples dikh jate


isliye clg jane ka hi nhi mann krta bs ye 75% ka criteria poora krne jata

i have left no motivation left for anything atp
na padhai me mann lgta h, na gym me workout me, na skills pe work krne ka mann krta h

i am just tired atp

Writing all this to just RANT , i know this is a battle i need to fight alone and no one can get in my head and erase all this but today i just wanted to be heard....things have been becoming hard to bear

https://redd.it/1x8bqr2
@BTechtardsReddit