Am I guaranteed a deployment as 11B in the National Guard?

Nothing in the military is guaranteed. I was a 71D. I had enlisted with a guarantee of first duty Station of Choice. I had this in writing in my enlistment contract. While in AIT training, everyone else was getting their duty assignment orders a week or two before graduation. I did not get my orders til 2 days before graduation. I received orders to Fort Sill, Oklahoma. This was not one of my Stations of Choice. When I complained to my 1st Sergeant, I was told the Army sends you where they need you...accept it. I took leave between AIT and reporting to my assignment. While at home, I found out my recruiter had transferred out of state. I went to my Congressman's office and opened an investigation. I reported to Fort Sill while the Congressman's office investigated. After a month or two, I was notified that, yes, I was correct. I had been guaranteed Station of Choice, however the Army could not honor their commitment. I was told that I could voluntarily be discharged due to the Army's failure to honor the commitment. I chose to stay in and serve out my 3 years. Bottom line is that the Military will do whatever they want to suit their needs.

Sadly no. You can volunteer for deployments but even if you get one not many 11B are earning their CIB on the current deployments they are going on. If that's your motivation.

Be careful for what you ask for because when you get it, you might not want it. I once had a Bn SGM who was on his first deployment to Iraq when I was on my forth. Your time will come but don't wish for it because once it starts it seems to never end.

Ask this question again when you hit E-5, LOLOL

Once you're enlisted you will have access to the site referenced in this link.
https://www.hrc.army.mil/content/HQDA%20G-3-5-7%20Mobilization%20Division%20Tour%20Of%20Duty

"Extremely motivated and want to deploy", yet joined the National Guard. Seems off to me.

I think it just depends on the route you take. My non active buddy in basic had signed up for a deployment. It’ll be worth looking into it with your chain of command

There are no guarantees. The ops tempo today is much lower than a few years ago. If you are fluent in Arabic and go active as a linguist I am sure you will deploy - a lot.