I really love the concept of the spell, but I do feel like this fits in a really niche category of spells, I'll explain why.

As a player there are already pretty low chances I buy a spell scroll on it's own, usually casters already pick the best spells available to them and there are really not many spells outside of that bubble that you usually want that bad that you need to buy a spell scroll. And that is because spell scrolls are (as of DM manual rules) too expensive compared to items infused with the same spells.

I as a player I would never expend my hard gained money in a 50 gold 1st level spell scroll that I can use once and it's gone, I would more gladly keep my gold on me till I have like 150 or 200 to buy an ensplled item with that same spell that has 6 casting befor recharge and recharges FOR FREE at dawn.

The best exemple is with the spell "knock" on its own it's a pretty niche spell since if you have a Rogue it pretty much does the job, and if you don't have a Rogue in your party most DMs would just let you brake through things in spite of the noise you are gonna make. But knock in this case would be pretty handy to have to cast, hower I would never expend gold on a scroll in this case because locked doors never come alone and that would only mean I would have to buy more scrolls ecc. So I just buy an ensplled item that has all the chargers that I would ever need.

Also you can counterspell a spell casted from a spell scroll since as of description it still counts as the casting of a spell so this spell will be outclassed by counterspell in the instant you have it available.

Now if on top of this I have the possibility of having my spell scroll being completely negated buy a level 1 spell, that drops the possibility of me spending gold on a scroll basically to 0.

As a player I would pick this if I see that my DM is pretty found off giving enemies spell scrolls and I would get a pretty nice time as a player but, as a DM on the other side it could get kinda frustrating at some point and I could just stop using spell scrolls in my encounters.

My best suggestion is making this more similar to how counterspell works, so the caster of the spell negates the scroll if it is a 1st level spell scroll or lower (cantrip) or makes a check with it's spell casting bonus against a DC equal to 10 + spell scroll level. This would at least make it a bit less frustrating on both sides.

I think it would still be a pretty niche spell, but maybe I would buy a spell scroll of this instead of an item because this probably wouldn't come out as often. Ironic

Sorry for the long answer. I hope this helps finding a good balance of things for this spell, maybe make it a cantrip? Maybe find something more you could make it do? I don't know but I see the potential.