Do you own a PC or other console?

Nintendo Switch is great for 1st party games and some exclusives, but frame rate / resolution might not be able to compete with other consoles, plus the MSRP of many games on e-shop can be 1 - 3 bucks more expensive compared to, say PSN.

If this is your only gaming device, then maybe consider Crisis Core, Hollow Knight, Octopath Traveler 2, Live a Live. If it's not, then stick to 1st party games, exclusives, and graphically less taxing games.

Also maybe consider getting 3rd party controllers

As for discounts, I use DekuDeals to keep track of the price drops. Most 1st party Nintendo games only have discount up to 33%, and those discounts happen like 2 - 3 times a year. While 3rd party games... I swear to god I've seen games that are on sale every month or so.

Some games get on sale every other month usually the indies. First party games are rarely on sale and usually with not much discount. Smash gone one or twice on sale MK11 went like 20 times already. Is not a bad console to hack up and as it's nearing it's support end, it wouldn't be a bad option since it's not completely confirmed the library you brought will carry. Although many think it will do cause ps and xbox did.