Tempered glass screen protectors are not very reliable as it will disrupt the reading process.
The most reliable ones would be the usual matte film protector (not the hydrogel or the fancy ones), but you should also get a good case as the film does not provide much impact protection.
Hydrogel SPs are designed for curved screens, are more expensive and offer not much additional benefit vs the standard (similar materials used i.e. TPU).
Of course there are good quality ones but you will eventually replace them every 5-6 months due to scratches etc.), would suggest investing the additional $$ to a good case (Spigen, Ringke, elago, Araree are all good options)
