We need much closer photos to be able to determine what sort of weeds you may be dealing with.

Generally, any broadleaf weed killer for lawns will be effective, something like Weed-B-Gon. But that will not address any grassy type weeds. Read the label first to confirm but most will allow overseeding in 14-21 days.

i am adding them now. Thanks for the help!!!

I used this on it two weeks ago and it has not touched it.

i don't know of any selective grass herbicides (between different grass types). Weed and Feed probably contains a pre-emergent meant for annual weeds that have not yet sprouted. I hand pull this type of grass in my lawn.

You want a lawn herbicide that addresses weed grasses like crabgrass. And the suitability of these will depend on the type of lawn you have. Once controlled, an early spring pre-emergent like Tenacity will help guard against future issues.

fwiw, weed and feed products are rather ineffective for any consistent lawn weed control and contribute heavily to water pollution. Not a highly rated or recommended product for good lawn care.

Please read up on weed control. Use your local cooperative extension as a resource. The goal should be to use the least toxic, yet effective product. Don't approach this willy-nilly using whatever product you see, without any research.

What kind of weed is it that I am fighting?

Can you identify that one posted as crabgrass or something else specific

Since we don't know exactly where you are located or what lawn type you have, we can only guess as to which specific weed grass it is. But crabgrass tends to be one of the earliest weed grasses to appear in cool season (more northern) lawns.

First, read the bag of the product and see what it is intended to kill. Surely, it will not kill any existing weed grasses (as you're showing us is your weed problem.) Let it do its job. It very well may take care of some broadleaved weeds. Usually results are not instant so give it time as per what the directions call for.

How many times do you want to reseed the lawn? If you'd prefer to do it once, hold off and prepare for a late summer/fall seeding. Usually, one gets better results ... a more durable product. Meanwhile, just mow what you got. Instructions for creating a lawn are highly dependent on one's location. Usually, unless one has an automatic irrigation system, newly seeded lawns are prone to failure as soon as hot weather sets in. A fall seeded lawn has many months of root development prior to hot weather.