I just bought a Electra Cruiser 7 , the front end to me seems very unstable is there anything I can do to improve that, I am new at this

First thing I would do is to check tire inflation, both front and rear. Next, I would check headset adjustment. A too loose or too tight headset can make a bike difficult to control. Is this a new bike? The dealer should be able to check it over for you

When I first got my bike, I found it pulled to the left. After pondering this tendency for a while, I measured the alignment of the wheels using a string from front to back wheels. I found that they were misaligned. Further investigation showed that the front wheel dropouts were not inserted into the forks the same amount. The result of this was to throw the wheel out of plumb so that at the point of contact with the road, the wheel was a cm or so to the left. This was easily fixed by filing the dropout with a round file. The geometry of the wheel is such that if the axle is off by, say one mm, the wheel at the rim will be off by about four mm. It took longer to think about the problem than to fix it.

What do you mean unstable? Your post requires a little more details...

Improper inflation, loose headset, loose spokes, warped wheel, etc.

yes it's a new bike and I've been back to the dealer three times the first time the son of the owner told me that is not enough dirt in the bearings yet give it time the owner checked it out for the head being too loose it's okay and he finally told me that he thinks that I'm . Oversteering

Maybe it's your fit/position on the bike? Should have your elbows bent, be relaxed, look ahead where you want to go, not where you don't want to go.

It's tough to keep it in the straight line it keep wants to wander left or right God help me if I tried to do no hands

Maybe he's right maybe I am trying to oversteer and maybe I will get used to it

Your question may be better suited here in Beach Cruisers.

With that said, your description is exactly what I expect that bike to do. Long front end, high handlebars, seat way behind the crank. It is like a motorcycle chopper, the front wheel is going to flop. Hopefully you will get use to it.

This. Slack/tall front end, with no weight over it = poor handling.

You'll most likely get used to, but don't expect to be railing corners anytime soon.

See above.

Thanks guys live and learn maybe next year I'll sell it by something different

You'll get used to it. If you are riding it as intended, you'll be fine.

Good move, beach cruisers are made of puppy dogs' tails and fail.

And maybe I won't

That is so true. You may never like the feeling of that bike and it would be time to rethink what kind of bike you want. You can always keep it as a back up or sell it. Good luck with whatever you decide.

Hold it up off the ground with the rear wheel higher than the front.
If the front wheel wants to sit to one side significantly, I will say it is the headset.

Good thought, as long as there's no bell, light, etc accessory mounted on one handlebar only.