Liu Bang's enemy should only be Xiang Yu, but Xiang Yu is a foolhardy man. Xiang Yu is very arrogant because he just overthrew the Qin Dynasty. When he faced Liu Bang, he didn't take it to heart, but Liu Bang was a wise man and there were many talented people around him, so it was not surprising that Liu Bang could defeat Xiang Yu and unify the whole country.
Liu Bei's opponents are Cao Cao and Sun Quan, both of whom are very strong, and they are also very powerful people themselves. Moreover, Liu Bei was still using the slogan of "Xing Han Shi" when he was fighting for land, otherwise not many people would follow him at all.
Moreover, Liu Bei was born in a humble background, and he could not read himself. Many times Liu Bei can't compete with Cao Cao and Sun Quan at all. Although he later achieved a three-point world situation, it was after Liu Bei invited Zhuge Liang, otherwise Liu Bei would certainly not have achieved such an achievement.
On the other hand, Liu Bei himself is still very indecisive, and he is not decisive when he meets things, wasting a lot of opportunities. But Liu Bang is different. He is a very decisive man. When fighting against Xiang Yu, Liu Bang considered every possibility, won Xiang Yu in one fell swoop and used tactics to pacify Sanqin, so Liu Bei was not as good as Liu Bang.