I heard that the reward is halved every 4 years after each halving, so the reward miners will receive will always approach zero. To maintain the Bitcoin network, the price of Bitcoin must keep rising infinitely, which is impossible. Could there be a point where the value of the Bitcoin miners receive is almost zero, and the Bitcoin network collapses due to a lack of miners?
Your concern is genuine but nothing of such would happen. Bitcoin has come to stay and miners will never be without rewards. You can imagine the amount of money these miners are making, it's crazy, and the fact that the price of Bitcoin is high and will keep increasing is a good one for them.
Besides, mining should be voluntary, the reward is an appreciation, so if they are true to the Bitcoin core purpose, they will never neglect the network. The true miners are the ones who started the mining process, their reward was nothing or little at that time, but at a point, they become rich, that's the spirit. That spirit that made more Bitcoin available without choosing the reward as the main goal is what would ever sustain the network. If at all some miners are tired due to reduced pay, I am sure that many more would do it sacrificially. Bitcoin will not collapse, relax.