Depends what you want to do or spend.
Lightroom is basically a RAW converter, but if you only shoot JPEG then that is no use to you. It is also a cataloguing system. If you tag and label your photos to within an inch of their life then it is worth it. Otherwise just store them in a folder in Windows in date order with a descriptive suffix. Lightroom does have a limited photo editing ability but this wont allow you to do major manipulations.
If you are into serious image management then you really need CC, but that’s not what I’d call cheap unless you are using it regularly for intensive work.
Elements is a stand alone, cut down amalgamation of both LR and CC. It is exceptional value for money for the interested, but not obsessive photographer.
Beware of internet sellers offering Adobe products for chicken feed. They are ALL dodgy. Don’t touch them with your worst enemy’s bargepole.
There are other products on the market. Capture One et al. They are very good at what they do, but all have limitations. Unfortunately Adobe is the standard setter for photo editing and all the others are playing catch up.
I’ve been playing with photo editing software for years, and have tried them all. For a beginner who is unsure how far you will go with this, then I’d suggest Elements. It will probably do far more than you need.