little code help

i have been tasked to build a web site for a old soldiers association in nz i have completed all but one page (members page) which is designed to allow members to update part of there personal information i have looked and tired near every Wix Tutorial i have found but cant get it to work i think part is probably due to being 70 and brain getting slow nowadays. i have attached a photo of the page and what im tiring to achieve

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Looks like you need to create a new dynamic page, see screenshot below. Make it an Item Page (later you may wish to create a Category Page which allows you to link to the Item Page. Edit the Item Page. Add Text input boxes and for each one, right click and choose “Connect to data”… For any text you want to make uneditable, use a Text box instead of a Text Input. You can also put in an image (any old image will do) then connect that one to data also - presumably a photo that you have in the database. I hope you are being careful to secure the website so unauthorized people can’t make changes! Hope this helps.

but it means everybody can write regimental noumber of someone and take a look at page or change information. I reccomand taht everybody log in first and than can change only their data. Its much safer. Imagin someone will change all emails or take those emails. When You put at dataset filter only looged in user then they will see only their informations.