There's zero chance you can reasonably adapt an LCD into a non-raster display device, let alone one with deflection rates of 60MHz +. You may as well build a scope from scratch.
The way you find something like that is by being patient. Put the scope in a closet, figure out what scopes have the same tube (there may be quite a few) and check eBay and craigslist from time to time. Eventually you will luck into one. One thing you have to worry about is whether the rest of the scope works or not, so you want to get a CRT as cheaply as possible or get a complete scope with issues to swap it out of. I find that 22xx scopes that get parted out turn into skeletons pretty quickly.
Also, I believe that the 154-0861-00 CRT will also work in your scope, although I can't be 1000% sure. This is the CRT used mostly in the 100MHz versions like the 2213A, 2235 and 2235 as well as the hybrid digital versions like the 2221, 2221A, 2230, 2232, etc. You might check on tekscopes.groups.io or maybe someone here knows for sure. I have one of these 154-0861-00 CRTs that I kept around for testing and it mostly works except is has an aberration or distortion at one point on the screen due to a small loose part inside. I'd send it to you for the cost of postage if you want to try it and test the rest of your scope before you spend a lot of time, money or effort on a good replacement. Or, it may work well enough for you.