First off, don't play Ike.
Okay, seriously though, I watched 1/2 of your first video Vs. Jiggly. Here's what I saw wrong:
1. Quickdraw too much on floor, stop that.
2. Aethering randomly on the floor, stop that.
3. Use F-air, N-air, Shield-dashing to approach, not quickdraw and other stuff you were doing.
4. Compromise on mistakes, that's Ike's strength (Jiggly rested in front of you and you JABBED?)
5. Don't F-smash so much, that's depending too much on the game-lag.
6. Use moves like U-air, B-air, F-tilt, etc. to kill. Not just F-smash and...Quickdraw?
7. Recover with Aether.
8. Do not go off the stage to aether back on, that's begging for gimp.
9. Jab more to rack damage instead of quickdraw.
10. Jab-cancel and use grabs.
Um...am I missing anything here? If I go any further I'm giving advice that can be seen simply by reading the several guides around these forums. From what I've seen, you've got a pretty sub-standard Ike so far. Watch some videos or something too.