Bridge of ppp0 and eth0 problem

Raspberry Pi Network HATs 3G/4G&LTE Base HAT
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1

I want to share the internet from ppp0 to rasp’s ethernet.
I made a bridge between ppp0 and eth0. Firstly, It worked but when I tried it with two different carriers it stopped working.

If I remove the bridge between ppp0 and eth0, all of the SIM cards with different carriers will work.
But if I create a bridge, just one of them works.

Thanks.