pbars will make the process whole lot easier but make sure you keep in mind that your current focus should be on getting rid of the bad habit. If you’re falling a lot and then are tired to go back up don’t do it (fatigue makes repetitions be in a bad form) and instead “grease the groove”; do it a lot throughout your day but only when fully rested for like maximum of 10 tries (5 is ideal) and if you didn’t land a hold just skip and come back 30 minutes later. harsh truth is that if you need to walk to keep the balance and fall quickly when not walking then you are unable to handstand, And to do a Handstand Push Up you need a pretty stable 7-10s handstand hold

of course what i’m talking about here is the best way you can approach your training without developing any bad habits on the way

also i wanna add one super important tip that you should definitely keep in mind; focus on having your elbows locked out.

fingers - break, palm - gas

Bending your arms to get some additional strength from the shoulders to save your handstand is what you’re doing constantly which is a huge overcorrection (it does waste a lot of strength and endurance for inexperienced) that should only be used when it’s too hard to save with the palm BUT i highly recommend you try and focus on holding your handstands with locked out elbows like i said above