ok, i have found some prettey big flaws in your stratagies, you improved through the game, but here are some problems i saw.
1. do not spam egg roll, for that matter don't use it from a distance at all
2. SHbair is your friend, don't run in if the opponent has been able to grab you multiple times.
3. down b is not your friend in the air. do not use this move to come downwards as often. use it for the occasional ko on the ground, or when you feel you have no choice, or when the opponent is below you but also in the air (hopefully high.) it has a large amount of lag making it most useful as a surprise attack on the ground.
4. edge guard!! if your opponent is off stage, chase him. i know you were spiked earlier, but he wont spike you if you are in front of him using nair. or above using dair.
now here are some nitty gritty details.
5. when your opponent is standing right at the edge, do not jump. this is counter productive because it gives them time to attack you without worrying. a better choice would be to attack from the ledge, giving you much needed space.
6.just be careful of smash spamming, they are good, but you just need to use the correct ones at the correct time
other details will be improved as time continues, dont sweat it
(i hope this recitation of all my previous faults and, at the same time, your current ones will help)