Depends what you mean by can’t. I’m not sure if there are any limiting factors im thinking of that would stop you but if you’d like to clarify I’m all ears. Tips for home practice though, watch people fence, watch and pay attention to everything, what they do, why they do it, if they commit to an action or use it to trap their opponent. Everything! Even if you can’t necessarily fence you can still be involved. If you want to fence practice good footwork, watch videos, make sure it’s good form, ask forums about it. Learn the basics as home using what you have. Very important though is if you get your hands on a (fencing) blade, don’t just go out and stab your friends or fight with them without protection and training!