Happy for you that you are ready and looking to get back into work
A lot of chains only really accept applications online, whereas more local shops will often take printed CVs in person. Some will take both, and why not do both to give twice the chance of being seen If you’re looking outside of the high street then searching online or asking people you know can find what sort of things exist around you.
It can be tedious to fill in applications online, but does work. Mentally prepare yourself for filling in lots but rarely hearing back, as the automated nature of the process means they often don’t respond. If you haven’t heard back after a while there is no harm in applying again.
If you do hand one in in person try to find a quieter time, so that you can ask to speak to a manager or supervisor, introduce yourself, and give it to them personally. That way you can leave a good impression and they are more likely to take time to read your CV.
You can go directly to things you know exist, or use sites like indeed, or talk to recruitment agencies who look for you. It sounds like you have a good approach, starting with something simple to build your experience back up, then see what you would like to do next.