Every time this happens to me, the clerk/cashier just shrugs and is like, “okay”. They get it, but are obligated to try anyway. The best you can do is be polite.

Note that Yandex has an aggressive captcha, so it doesn’t really work with SearXNG in its current state. Tested a couple weeks ago.

You might consider trying Miniconda, a version of Anaconda. It installs a local python environment of your choosing at a user level. https://docs.anaconda.com/miniconda/

I don’t know how safe this is, but what I do:

0. Make a local XMR wallet, backup, and host your own blockchain
1. Buy regular crypto, say LTC, from a legit exchange with KYC
2. Swap that to XMR on an anon swap/exchange, storing in your wallet 3 (optional). Move from your first wallet to another, for extra safety???

Spend it where you can, not many places. BTCPay server, which can be self-hosted, supports it, so there are options.