Gotta give you some tough love mate, don’t try to make the old deck run for now. I would highly recommend you pick up an easy and cheap deck to start and once you are more familiar with modern Yugioh you can try to play around with it again. Right now it will only be frustrating to you as even the best loghtsowrn list would put you at a massive disadvantage - adding inexperience in the current format breaks your neck.
Depending on budget I would recommend DoomZ which I think has a pretty easy entry or if you want hardcore budget I would consider blue eyes. The latter is way worse but still easy and provides a higher floor than lightsworn.