As long as it's safe, if its cheap and wobbly/unsteady ask yourself if it is it worth risking your life.
I have a cheap bench press, but it's made from steel, and safe as a rock, genuine Aussie made.![]()
This the one?
HPF PRO BENCH PRESS BARBELL WEIGHTS HOME GYM EXERCISE | eBay
I'd watch the weight capacity - 100kg is not a lot of weight to put on a bench. Particularly if it includes your body weight...
The barbell also looks like it's a hollow one so won't hold much more than your 50kg.
Good for beginning maybe, but as your lifts increase I'd suggest upgrading to something a bit more hardy....