Why did Bucky stop aging?
Bucky Barnes, like Steve Rogers, has lived for several decades due to cryogenic freezing and the super-soldier serum. Bucky's life expectancy could potentially surpass Steve's 116 years, depending on circumstances. Despite outwardly aging at the same rate as Steve, Bucky can still live for at least another 80 years.Taking the experimentation, cryogenic freezing and time skips into consideration, Bucky is physically somewhere in his mid-30s by the time The Falcon and the Winter Soldier takes place, making him appear seventy-some years younger than his chronological age.Reformed by his friends, he now fights alongside the Avengers. James Buchanan “Bucky” Barnes enlists to fight in World War II, but eventually literally falls in battle. Unfortunately, the evil Arnim Zola recovers him and erases his memory, turning him into a highly-trained assassin called the Winter Soldier.

Why doesn t Bucky have a bed : So, the logical conclusion is that Bucky sleeps on the floor because, to him, a mattress is disturbingly marshmallow-like, threatening to swallow him whole.

How is Bucky 106 years old

Bucky was born on March 10, 1917, so he was already older than Steve, who was born on July 4, 1918, even before they became enhanced. Further, Captain America was frozen and preserved as he was in 1945 without thawing for nearly seven decades before he was revived.

Do super soldiers age slower : The Super-Soldier Serum dramatically prevents individuals from aging due to the regeneration of healthy cells. For instance, Dr. Kudrin has stated that Natasha "don't age as fast."

28
According to Google, comics Bucky was born March 10, 1917. If we presume that's the case for movie Bucky, he'd have been 24 when the US declared war against Japan and 28 when the war was in it's closing days, which is generally the time frame for when he disappeared.

Serum enhances the strength and ability of human. Now bucky was not weaker than John, but we can see the fact that even at his human level John walker had better training than Bucky. He was so good as fighting before even getting the serum. So he was able to fight better than bucky.

Why does Bucky hate Sam

Bucky had resentment towards Sam for giving up the shield. The therapy session showed the issues they had towards each other. Bucky wanted to know why Sam gave up the shield that Steve trusted him with and was Steve's whole legacy. Bucky emotionally says that if Steve was wrong about Sam then he was wrong about him.PTSD
His PTSD induces terrifying nightmares, and he is haunted by the memory of the innocents he killed. Some fans have speculated that the Winter Soldier may have also been a manifestation akin to Dissociative Identity Disorder. In his previous state, Bucky was identified as solely 'the asset' due to his brainwashing.A side effect of the Super-Soldier Serum that the Winter Soldier shares with Captain America is that neither can get drunk.

Each branch of the military has age limits to enlist in active duty: Air Force: 17 – 39. Army: 17 – 35. Coast Guard: 17 – 31.

How much older is Bucky than Steve : Bucky was born on March 10, 1917, so he was already older than Steve, who was born on July 4, 1918, even before they became enhanced. Further, Captain America was frozen and preserved as he was in 1945 without thawing for nearly seven decades before he was revived.

How tall is Bucky Barnes : 5’9”
Winter Soldier, Bucky Barnes, is portrayed by Sebastian Stan in the MCU with a height of 6'0" (1.83 m). The comic book height of Bucky Barnes is 5'9” (1.75 m). Bucky Barnes, also known as Winter Soldier, is a fictional anti-hero in Captain America: The Winter Soldier and the extended Marvel franchise.

Is Bucky stronger than cap

Usually, Captain America is considered the best fighter in the Marvel Universe, but on this occasion Bucky beat him fair and square, even using Steve's own shield to deliver the final blow. The power levels of Marvel characters vary greatly according to writers' preferences and story needs.

Winter Soldier's Prosthetic Arm is a cybernetic implant attached to Bucky Barnes' left shoulder to be used in place of his missing left arm. Following the loss of his arm in 1945, Barnes was given a titanium arm by HYDRA.The actor also said that Sam and Bucky's relationship is rooted in acceptance, appreciation, and love for each other. "You'd call it a bromance, but it's literally just two guys who have each other's backs," he said.

Why did Bucky go crazy : Apparently blown up by Baron Zemo, Bucky became a brainwashed weapon of the Russians until Captain America restored his memories with a Cosmic Cube. Since then, he has focused on making up for all the pain he caused as the Winter Soldier.