I’ve really many equipment since I was mining ETH back in 2021 but when it changed from PoW to PoS I’m not sure about its profitability..I mean only 3% APR and much more money to invest now.
3% APR is current rate of ETH staking. Few years ago, it was few times higher.
So, do you recommend to stick to BTC mining or switch to staking? I saw crazy APRs like 150% but not sure about it
Without any detail, no one can make solid recommendation. But if you don't have way to obtain Bitcoin ASIC affordably or cheap electricity price ($0.07/kWh or lower), BTC mining probably would be unprofitable for you. And i'm not aware of any coin which offer 150% APR by perform staking.