With Onto there is no need to get a home charger as public charging is all inclusive.
However it does help if you can plan the public charging into your daily/weekly routine so things like supermarket shopping/gym etc. work well so you are not sitting killing time in the car while it charges. Also many workplaces offer charging, so that could be an option for you or any others reading this thread.
Bannatyne gyms nearly always have a couple of Instavolt, Tesco have free podpoints, usually 7/22kW They sometimes have 50kW chargers, but these are not included with Onto, but are reasonably priced at only 28p/kWh.
If you can’t plan something around public charging, then the advantage of home charging is it just gets on with it overnight, but you will need cheap rate EV tariffs to make the most of this. If you are thinking of switching then can recommended Octopus Energy and have £50 referral code, just ask.
The fact that you are asking means you have off road parking for home charging. Single phase is more than capable of supplying a 7kW charger, which is the norm in the U.K.
There are loads of ‘smart’ chargers to choose from and some integrate well with solar, so you can divert any excess to an EV or indeed immersion for hot water. If you have or thinking of having solar at some point, then worth getting something that supports that in the months ahead.
Ones to look at are Zappi, EO mini, Ohme, Wallbox, Indra, etc. Ohme are often available at a discounted price via Octopus Energy.
All solar/battery storage/EV charger installer/suppliers are swamped with work at present due to the energy crisis and prices have also shot up. So you may be better just researching for the solution and getting it later on when the current madness has subsided a bit.