I have some USDT and USDC in my portfolio that I'd want to stake in a "De-Fi" dApp without worrying about it in a long time. There are liquidity pools in Uniswap with attractive stake rates, but there's also Compound.Finance with its lending services. Both of these platforms are built on the ETH blockchain, so gas fees would be astronomically high. I've read about some platforms being compatible with Polygon (MATIC), but I'd have yet to see if it's worth the shot (especially in terms of security/reliability).
Do you know the safest way to stake stablecoins without breaking the bank? Also, do you think it's worth it? Or should I consider other options? Any suggestions and/or recommendations would be greatly appreciated. Thanks in advance.

you should consider that staking yields on a stablecoin, express a form of interest and as you may already know, the higher the interest rates, the higher the risk to lose capital...
considering the current market momentum, all fiat and stablecoins, seem to go fast to big devaluation and gas fees would be your last problem, maybe best option for now, would be to buy and stake ETH or hold BTC, gold etc....