Absolutely not, you will completely ruin the frets with a steel hammer. Get a fret hammer.
Unless the frets are very poorly installed and not seated properly they probably need levelling rather than hammering. After you have levelled the frets you will of course need to crown them and polish them.
If you are absolutely sure the frets aren't properly seated it MIGHT help to hammer them. But if it's the frets ENDS that are are popping up you will usually not be able to seat them properly no matter how much you hammer them. You will most likely first have to remove the frets and bend them to an appropriate radius (I prefer a SLIGHTLY lower radius, more bended, than the fretboard radius) and THEN hammer them down. This way you should be able to seat the frets properly. It takes a bit of practise to get it right. Hammer too much or too hard and the fret ends WILL pop up.
Using a fret rocker is a good way to go insane. I will strongly advice against it. It will nearly always "rock" somewhere, even with perfectly levelled frets. Did you at least loosen the strings and adjust the truss rod for a PERFECTLY straight neck before you checked the frets with your small level? If not the result are 100% worthless.
Gluing the frets should only be done as a last resort IMO. I would only do it on an old instrument with very worn fret slots and even then only as a last resort. Gluing the frets shouldn't be necessary AT ALL if the fret slots are in good shape and the frets are properly installed. Using glue will only cause potential problems if/when the bass needs a refret in the future. I absolutely HATE it when I have to refret a bass where someone has glued the frets.
It's great that you are trying to learn these things and that you've got a cheap bass to practise on, which is a great start! The StewMac website is a great resource for learning different techniques. Check out their videos. They also have excellent tools for pretty much any guitar repairs (but their prices can be a bit steep...).
Good luck!