I would never touch any altcoin network or bridge with a ten foot pole.
They are nothing but high-tech vehicles for committing fraud, scams and hacks and the idiots using them lose millions on a daily basis.
There are scams indeed and I don't know much about bridges and I only know one which is used in axie infinity. I don't know why OP think of that way as safe and I think it's what OP preferred to use when there's a high risk when using it. Anyway, I might use other ways to convert BTC but there's only one platform I am using to convert BTC to another crypto and you only have to send it and provide wallet address to receive the crypto you exchanged it to although there's not much crypto supported.