It look like BSC light node have issues since last update (see this GitHub issue for instance https://github.com/binance-chain/bsc/issues/452 )
As an alternative, Binance has free endpoint (https://docs.binance.org/smart-chain/developer/rpc.html) and there are a few third-party providers (Quicknode, Ankr, Moralis) offering BSC nodes (sometimes at a cost).