I have fiber 2gbps internet and HG8245Q2 router that I can’t replace.

My PC has nic: Intel® I225-V 2.5Gbps LAN and with my current workflow I have multiple connections open to different several hosts on the internet that upload/download data.

Is there a way to increase the total bandwitch I can achive from my PC to make us of the 2gbps connection?

I was thinking about getting a 2.5gb switch with LAG support. I could connect two ports to my router and third port to my PC.

Would that work (if yes what switch would be inexpensive but reliable option?)

Will the total bandwitch with several connections to different host exceed 1gbps?

Does my nic need to support link aggregation?

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Thanks!