The Bible is clear that we don't go to heaven based on how we died, but on how we lived. People go to heaven when they have given their lives to Jesus and belong to Him. People don't go to heaven when they keep their sin nature despite God's offer to forgive them from it. Going to heaven has nothing to do with being good or with how you died.

There aren't any verses that talk about suicide. Some people in the Bible committed suicide (Possibly King Saul, definitely Judas), but there are no teaching in the Bible about it.

Obviously, suicide is taking a life, and the Bible does say that it's wrong to willfully take a life by violence (Ex. 20.13), but it doesn't speak specifically about suicide.

Some people consider that the Roman Catholic Church teaches that anyone who suicides goes directly to hell. While some Catholics agree to that, others don't. But what we definitely do NOT find is the Bible teaching that. The Bible never says that people who kill themselves go to hell, even though the last act they committed on this earth was murder. The teaching of Scripture is clear that your final destiny is not dependent on an action like that, but the state of your soul (with a sin nature or the nature of Jesus) at the end of life.

What are the chances of getting into heaven if one commits suicide ?

If someone commits suicide, let’s say because they lost someone they loved and they can’t cope. What are the chances of that person entering heaven ?