It's really easy OP as long as you are prepared ahead of time and you don't have loads of carry on stuff. Here's your plan
The morning you leave
Dress so you don't have to remove loads of stuff at security. Try not to wear belts, jewellery or heeled shoe or boots as these all have to come off and go in a tray. Keep your jewellery in your carry on. If you wear a jacket or cardy ensure you are decent when you remove it as thee have to come off too into the tray. This because anything metal makes the alarm go off and jackets and scarves can hide things.
Limit your carry on bag contents to essentials only. Passport, medicines, purse, phone, jewellery, specs, keys etc
Any liquids in your carry on or gels need to go in a plastic bag. Lip balms, mascara, hand cream etc. put these in a sandwich bag at home. The standard size. Don't take bottles of water or anything over 100mls
Ensure you can have easy access to passport and phone in your carry on
At the airport security
There will be people to help and guide you and you will be in a queue so watch others.
You will approach and you will need to get a tray. Take off any jackets or scarves or specs and pop them in one tray. Take any electronics eg laptops and kindle out into another tray. Your carry on bag and anything else in your pockets goes in another tray. It doesn't matter how many trays you use they just all need to be laid out flat.
Any electronics in your carry on such as laptop or kindle need to come out of you bag and into the tray. As does your bag of liquids.
Push your trays onto the conveyor and wait to be summoned through the gate. Sometimes you have to stand in a little cubicle while they scan you. Staff will tell you what to do.
If the alarm is set off you will need to wait for a few second while a female member of staff scans you with a metal detecting stick. Sometimes my underwire sets it off and if that happens they know and you get waved on. You will not have to undress and you won't be touched. Sometimes they do a standard body sweep but it takes seconds. This is why dressing well in advance helps!
Collect your trays and leave into departures where there is wine and shopping!